(76) باب فِي الرَّايَاتِ وَالأَلْوِيَةِ
Narrated Al-Bara' ibn Azib:
Yunus ibn Ubayd, client of Muhammad ibn al-Qasim, said that Muhammad ibn al-Qasim sent to al-Bara' ibn Azib to ask him about the standard of the Messenger of Allah (ﷺ). He said: It was black and square, being made of a woollen rug.
Reference: Sunan Abi Dawud 2591
In-book reference: Book 15, Hadith 115
English translation: Book 14, Hadith 2585