Narrated Uqbah bin Amir: One day the Messenger of Allah ﷺ went out and prayed over the martyrs of Uhud like his prayer over the dead, and then returned.
Hadith Referenceسنن ابي داود / كتاب الجنائز / 3223
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:صحيح بخاري (6426) صحيح مسلم (2296)
Benefits and Issues: Some people have used this narration as evidence for the legitimacy of performing the funeral prayer (salat al-janazah) for a martyr (shahid). Whereas other scholars say that what is intended here is not the performance of the funeral prayer, but rather making supplication (du'a) similar to that made at a funeral. ('Awn al-Ma'bud) Therefore, this is not a clear and explicit text for the aforementioned inference.
Source: Sunan Abu Dawood – Commentary by Shaykh Umar Farooq Saeedi, Page: 3223