The Book of The At-Tatbiq (Clasping One's Hands Together)
12/95. Chapter:
How to sit for the first tashahhud
Sunan an-Nasai
أَخْبَرَنَا قُتَيْبَةُ بْنُ سَعِيدٍ، قَالَ حَدَّثَنَا اللَّيْثُ، عَنْ يَحْيَى، عَنِ الْقَاسِمِ بْنِ مُحَمَّدٍ، عَنْ عَبْدِ اللَّهِ بْنِ عَبْدِ اللَّهِ بْنِ عُمَرَ، عَنْ أَبِيهِ، أَنَّهُ قَالَ إِنَّ مِنْ سُنَّةِ الصَّلاَةِ أَنْ تُضْجِعَ رِجْلَكَ الْيُسْرَى وَتَنْصِبَ الْيُمْنَى .
It was narrated from 'Abdullah bin 'Abdullah bin 'Umar that his father said: "One of the sunnahs of the prayer is to spread your left foot beneath you, and hold your right foot upright."
Reference : Sunan an-Nasa'i 1157In-book reference : Book 12, Hadith 129English translation : Vol. 2, Book 12, Hadith 1158