أَخْبَرَنَا مُحَمَّدُ بْنُ آدَمَ، عَنْ عُمَرَ بْنِ عُبَيْدٍ، عَنْ أَبِي إِسْحَاقَ، عَنْ أَبِي الأَحْوَصِ، عَنْ عَبْدِ اللَّهِ، قَالَ كَانَ رَسُولُ اللَّهِ صلى الله عليه وسلم يُسَلِّمُ عَنْ يَمِينِهِ حَتَّى يَبْدُوَ بَيَاضُ خَدِّهِ وَعَنْ يَسَارِهِ حَتَّى يَبْدُوَ بَيَاضُ خَدِّهِ .
It was narrated that 'Abdullah said: "The Messenger of Allah (PBUH) 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." Translation Not Available
Book Ref: Sunan An Nisai Book 13 Hadith 1323
Web Ref: Sunan An Nisai Vol 2 Book 13 Hadith 1324