Sunan an-Nasa’i – Hadith No : 1323

It was narrated that ‘Abdullah said: “The Messenger of Allah (ﷺ) used to say the salam to his right so that the whiteness of his cheek could be seen, and to his left so that the whiteness of his cheek could be seen.”

Hadith In Arabic Text :

أخبرنا محمد بن آدم، عن عمر بن عبيد، عن أبي إسحاق، عن أبي الأحوص، عن عبد الله، قال كان رسول الله صلى الله عليه وسلم يسلم عن يمينه حتى يبدو بياض خده وعن يساره حتى يبدو بياض خده ‏.‏

Chapter : The Book of Forgetfulness (In Prayer) – كتاب السهو