Sunan an-Nasa'i 1319

It was narrated that 'Abdullah said:"I saw the Messenger of Allah (ﷺ) saying the takir every time he went down or came up, or stood or sat, and he said the salam to his right and to his left: As-salamu 'alaykum wa rahmatullah, as-salamu alaykum wa rahmatullah (peace be upon you and the mercy of Allah, peace be upon you and the mercy of Allah) until the whiteness of his cheek could be seen . And I saw Abu Bakr and 'Umar, may Allah (WT) be pleased with them, doing likewise