Sahih Muslim 533

حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا وَكِيعٌ ح، وَحَدَّثَنَا أَبُو كُرَيْبٍ، حَدَّثَنَا أَبُو مُعَاوِيَةَ، كِلَاهُمَا عَنِ الْأَعْمَشِ بِهَذَا الْإِسْنَادِ غَيْرَ أَنَّهُمَا قَالَا: مَا أَنْتُمْ يَوْمَئِذٍ فِي النَّاسِ إِلَّا كَالشَّعْرَةِ الْبَيْضَاءِ فِي الثَّوْرِ الْأَسْوَدِ أَوْ كَالشَّعْرَةِ السَّوْدَاءِ فِي الثَّوْرِ الْأَبْيَضِ وَلَمْ يَذْكُرَا أَوِ الرَّقْمَةِ فِي ذِرَاعِ الْحِمَارِ

The same hadith has been narrated from A'mash on the authority of the same chain of transmitters with the exception of these words: You would be no more among men (on the Day of Resurrection) but like a white hair on (the body of) a black ox, or like a black hair on (the body of) a white ox, and he made no mention of: a strip on the foreleg of an ass.