´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."
Hadith ReferenceSunan an-Nasa'i / The Book of The At-Tatbiq (Clasping One\'s Hands Together) / Hadith: 1158
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:صحيح بخاري