Sunan Abu Dawud #962 · Prayer (Kitab Al-Salat)

Sunan Abu DawudIt was reported from Ibrahim that he said
Sunan Abu Dawud · Book 2 · Prayer (Kitab Al-Salat)
Sunan Abu Dawud · كتاب 2 · كتاب الصلاة
"When the Prophet (ﷺ) would sit in the prayer, he would place his left foot horizontally - so much so that the upper-part of his foot became black
حَدَّثَنَا هَنَّادُ بْنُ السَّرِيِّ، عَنْ وَكِيعٍ، عَنْ سُفْيَانَ، عَنِ الزُّبَيْرِ بْنِ عَدِيٍّ، عَنْ إِبْرَاهِيمَ، قَالَ كَانَ النَّبِيُّ صلى الله عليه وسلم إِذَا جَلَسَ فِي الصَّلاَةِ افْتَرَشَ رِجْلَهُ الْيُسْرَى حَتَّى اسْوَدَّ ظَهْرُ قَدَمِهِ ‏.‏
Reference : Sunan Abu Dawud 962In-book reference : Book 2, Hadith 573