When the Prophet (ﷺ) entered Mecca his banner was white.
Sunan Abi Dawud Book 15, Hadith 116
← Previous Hadith 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. Sunan Abi Dawud Book 15, Hadith 115 Next Hadith → Simak reported on the authority of a man from his people, on the authority of another man from them: I saw that the standard of the Messenger of Allah (ﷺ) was yellow. Sunan Abi Dawud Book 15, Hadith 117