Sunan Ibn Majah 1513
سنن ابن ماجه#1513SahihIt was narrated that Ibn ‘Abbas said:“They (the martyrs) were brought to the Messenger of Allah (ﷺ) on the Day of Uhud, and he started to offer the funeral prayer for them, ten by ten. Hamzah lay where he lay, and they were taken away but he was left where he was.”
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Muhammad Fouad Abd al-BaqiSahih
Zubair Ali ZaiHasan
In-book reference: 6:81