The
Battle of Dzatus Sawari – Ma'rakat Dhat al-Sawari – Arabic: معركة ذات الصواري, literally "Battle of the Masts", is
the first major sea battle in Islamic history and the battle that ended 700 years of undisputed Byzantine naval supremacy.
1. Why it happened - The need for a navy
For the first 15 years of Islam, Muslims were a land power. The Caliphs Umar ibn al-Khattab (RA) initially forbade sea expeditions, fearing for Muslim lives.
That changed under Caliph Uthman ibn Affan (RA):
- In 28H / 649 CE, Muawiyah ibn Abi Sufyan, governor of Syria, was allowed to build a fleet in Acre (Akka) and Tyre, using Coptic and Syrian Christian shipwrights who knew Roman shipbuilding.
- At the same time, Abdullah ibn Sa'd ibn Abi al-Sarh, governor of Egypt, built a fleet in Alexandria.
- The trigger was Byzantine raids on Muslim coasts. Cyprus in 649 and Rhodes, Crete, were raided successfully, proving Muslims could fight at sea. This was also a fulfilment of the hadith of Umm Haram bint Milhan (RA), where the Prophet (SAW) said a group of his Ummah would undertake a sea expedition – she later died in the Cyprus expedition, where she fell while riding a mule.
By 654-655 CE / 34 AH, Muawiyah aimed for Constantinople itself. He led a land army through Cappadocia to Chalcedon, while the combined Syrian-Egyptian fleet sailed along southern Anatolia.
The Byzantines could not allow it. Emperor Constans II personally led the imperial fleet – 500 ships according to Muslim sources, 1000 according to Theophanes – to intercept.
2. The Battle
Date: Most historians agree on 34H / 655 CE [Al-Tabari gives 31H and 34H, but Armenian Sebeos and Byzantine Theophanes agree on 654-655].
Location: Off Mount Phoenix (Phoinike), near the harbour of Phoenix - modern Finike, Antalya, Lycia, on the Turkish coast
Commanders: Muslims – Admiral Abu al-A'war al-Sulami under Muawiyah's overall command, with Abdullah ibn Sa' d. Byzantines – Emperor Constans II himself.
Strength: Muslims - 200 ships vs Byzantines ∼500-1000. Muslim sources mention sabotage just before the battle – two Christian brothers from Tripoli, Syria, sabotaged part of the fleet and defected, leaving Muslims heavily outnumbered.
The night before: Theophanes reports Constans II dreamt he was in Thessalonica. His dream interpreter said, "Would that you had not slept" – because Thessaloniki sounds like Greek thes allo nike – "give victory to another".
Tactics: The sea was rough. Both fleets lashed their ships together with chains and ropes to create a stable fighting platform. Al-Tabari describes ships arranged in lines and tied together.
This was Muawiyah's genius - he turned a naval battle into a land battle. Muslim infantry, excellent in close-quarters sword combat, could fight hand-to-hand as if on solid ground. The battle lasted from morning until near noon.
Why is it called Dhat al-Sawari?
The masts were so dense, and so many ships were tied together that they looked like a forest of masts. Another narration says the sea was so full of blood it looked like the masts were standing in blood.
Byzantine losses were almost total. Emperor Constans barely escaped – Theophanes says he exchanged armour with one of his officers to disguise himself and fled to Constantinople.
3. Aftermath and Significance
Immediate aftermath:
According to traditional Muslim sources, the fleet turned back because news of dissension against Caliph Uthman and the beginning of the First Fitna was spreading among the crews.
According to Armenian historian Sebeos, the Muslim fleet actually continued to Constantinople and attempted a siege of the capital, but a huge storm sank ships carrying siege engines – which the Byzantines attributed to divine intervention.
Strategic impact:
- End of Mare Nostrum: The Mediterranean had been called a "Roman lake" for centuries. After Dhat al-Sawari, it became a contested sea.
- Birth of Islamic naval power: This victory proved a desert people could become a sea power. It opened the way for the conquest of North Africa's coast, Sicily, and later Spain.
- The first decisive conflict of Islam on the deep: Muslim historians call it that because it was the first time Muslims met the Byzantines in open deep water, not just coastal raids.
For Muslims, it remains a lesson – within 25 years of the Prophet's (SAW) death, a community with no naval tradition built 200 warships and defeated the superpower of the time through adaptation, tying ships together and using their core strength – close combat and tawakkul.
ABOUT THE HADITH OF UMMU HARAM BT MILHAN
Umm Haram (RA) herself narrated through Anas ibn Malik (RA):
Arabic text:
حَدَّثَنَا إِسْمَاعِيلُ، قَالَ: حَدَّثَنِي مَالِكٌ، عَنْ إِسْحَاقَ بْنِ عَبْدِ اللَّهِ بْنِ أَبِي طَلْحَةَ، عَنْ أَنَسِ بْنِ مَالِكٍ رَضِيَ اللَّهُ عَنْهُ، أَنَّهُ سَمِعَهُ يَقُولُ: كَانَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ إِذَا ذَهَبَ إِلَى قُبَاءٍ يَدْخُلُ عَلَى أُمِّ حَرَامٍ بِنْتِ مِلْحَانَ فَتُطْعِمُهُ، وَكَانَتْ تَحْتَ عُبَادَةَ بْنِ الصَّامِتِ، فَدَخَلَ يَوْمًا فَأَطْعَمَتْهُ، فَنَامَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ، ثُمَّ اسْتَيْقَظَ يَضْحَكُ، قَالَتْ: فَقُلْتُ: مَا يُضْحِكُكَ يَا رَسُولَ اللَّهِ؟ فَقَالَ: "نَاسٌ مِنْ أُمَّتِي عُرِضُوا عَلَيَّ غُزَاةً فِي سَبِيلِ اللَّهِ يَرْكَبُونَ ثَبَجَ هَذَا الْبَحْرِ، مُلُوكًا عَلَى الْأَسِرَّةِ أَوْ قَالَ: مِثْلَ الْمُلُوكِ عَلَى الْأَسِرَّةِ"، شَكَّ إِسْحَاقُ، قُلْتُ: ادْعُ اللَّهَ أَنْ يَجْعَلَنِي مِنْهُمْ فَدَعَا، ثُمَّ وَضَعَ رَأْسَهُ فَنَامَ، ثُمَّ اسْتَيْقَظَ يَضْحَكُ، فَقُلْتُ: مَا يُضْحِكُكَ يَا رَسُولَ اللَّهِ؟ قَالَ: "نَاسٌ مِنْ أُمَّتِي عُرِضُوا عَلَيَّ غُزَاةً فِي سَبِيلِ اللَّهِ يَرْكَبُونَ ثَبَجَ هَذَا الْبَحْرِ مُلُوكًا عَلَى الْأَسِرَّةِ، أَوْ مِثْلَ الْمُلُوكِ عَلَى الْأَسِرَّةِ"، فَقُلْتُ: ادْعُ اللَّهَ أَنْ يَجْعَلَنِي مِنْهُمْ، قَالَ: "أَنْتِ مِنَ الْأَوَّلِينَ"، فَرَكِبَتِ الْبَحْرَ زَمَانَ مُعَاوِيَةَ، فَصُرِعَتْ عَنْ دَابَّتِهَا حِينَ خَرَجَتْ مِنَ الْبَحْرِ فَهَلَكَتْ.
English translation - Sahih al-Bukhari 6283:
Narrated Anas bin Malik: Whenever Allah's Apostle went to Quba, he used to visit Um Haram bint Milhan, who would offer him meals, and she was the wife of 'Ubada bin As-samit. One day he went to her house, and she offered him a meal, and after that he slept and then woke up smiling. She (Um Haram) said, I asked him, 'What makes you laugh, O Allah's Apostle?' He said, 'Some people of my followers were displayed before me as warriors fighting for Allah's Cause and sailing over this sea, kings on thrones,' or said, 'like kings on thrones.' I (Um Haram) said, 'O Allah's Apostle! Invoke Allah that He may make me one of them.' He invoked Allah for her and then laid his head down and slept again and then woke up smiling. I asked, 'What makes you laugh, O Allah's Apostle?' He said, 'Some people of my followers were displayed before me as warriors fighting for Allah's Cause and sailing over this sea, kings on the thrones,' or said, 'like kings on the thrones. 'I (Um Haram) said, 'O Allah's Apostle! Invoke Allah that He may make me one of them.' He said, 'You will be amongst the first ones.'
And the narrator adds:
It is said that Um Haram sailed over the sea at the time of Muawiya, and on coming out of the sea, she fell down from her riding animal and died.
There are two parts in this hadith that scholars note:
The first expedition — "kings on thrones" on the green sea — which was Cyprus 28H, where Umm Haram (RA) was martyred by falling from her mule. This is why she is considered the first martyr of the Muslim Navy.
The second expedition — in the same chapter, Bukhari 2924, the Prophet (SAW) wakes up a second time smiling and says another group will conquer Caesar's city (Constantinople). That is linked to the later naval campaigns, including Dhat al-Sawari 34H.
The tomb of Ummu Haram in Cyprus
The tomb of Umm Haram is in Larnaca, Cyprus, and a mosque is built beside it. The mosque is known as Hala Sultan Tekke.
That's why Hala Sultan Tekke in Larnaca is so important — it marks where that first du'a was fulfilled.
Hj Zulheimy Maamor
20 October 2026: 1:37 a.m.