MUSLIM 582:
from ʿĀmir b. Saʿd from his father —
I saw the Messenger of Allah (may peace be open him) pronouncing taslim on his right and on his left till I saw the whiteness of his cheek.
مسلم ٥٨٢:
عن عامر بن سعد عن أبيه —
كُنْتُ أَرَى رَسُولَ اللَّهِ ﷺ يُسَلِّمُ عَنْ يَمِينِهِ وَعَنْ يَسَارِهِ حَتَّى أَرَى بَيَاضَ خَدِّهِ