ENOfficial
Jabir said that when the Prophet (ﷺ) entered Mecca his banner was white. Tirmidhi, Abu Dawud and Ibn Majah transmitted it.
Source: sunnah.com
Other translations
Arabic
وَعَنْ جَابِرٌ: أَنَّ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ دَخَلَ مَكَّةَ وَلِوَاؤُهُ أَبْيَضُ. رَوَاهُ التِّرْمِذِيُّ وَأَبُو دَاوُدَ وَابْنُ مَاجَهْ
sunnah.com