MUSLIM 581b:
from Amīr or a man Sallam Taslīmatayn —
An Amir or a person pronounced taslim twice. 'Abdullah said: Where did he get this sunnah?
مسلم ٥٨١b:
عن امير oر ا من سلم تسليمتين —
عَبْدُ اللَّهِ أَنَّى عَلِقَهَا