Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) said: I saw the Messenger of Allah (peace and blessings be upon him) most often turning away from his left side.
The students of al-A'mash narrated it in this way, while al-Hajjaj bin Artah differed from them.
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 10128