Sunan Ibn Majah 914
سنن ابن ماجه#914SahihIt was narrated from ‘Abdullah that the Messenger of Allah (ﷺ) used to say the Salam to his right and his left, until the whiteness of his cheek could be seen (saying):“As-salamu ‘alaikum wa rahmatullah (Peace be upon you and the mercy of Allah).”
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Muhammad Fouad Abd al-BaqiSahih
Zubair Ali ZaiSahih
In-book reference: 5:112