Sayyida Aisha (may Allah be pleased with her) narrates that the Messenger of Allah (peace and blessings be upon him) would perform (three witr), and to separate the two and one rak'ah, he would say salam, and I, being at home, would hear your salam.
Hadith Referenceمسند عمر بن عبد العزيز / عمر بن عبد العزيز عن عائشة رضي الله عنها / 14