Sunan Abi Dawud, Hadith 2587 ⓘ
Narrated Simak ibn Harb: 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 was yellow.
حَدَّثَنَا عُقْبَةُ بْنُ مُكْرَمٍ، حَدَّثَنَا سَلْمُ بْنُ قُتَيْبَةَ الشَّعِيرِيُّ، عَنْ شُعْبَةَ، عَنْ سِمَاكٍ، عَنْ رَجُلٍ، مِنْ قَوْمِهِ عَنْ آخَرَ، مِنْهُمْ قَالَ رَأَيْتُ رَايَةَ رَسُولِ اللَّهِ صلى الله عليه وسلم صَفْرَاءَ .
also referenced under: Hadith 2593 (DarusSalam) & Book 14, Hadith 2587 (USC-MSA)