A'isha reported that Allah's Messenger (may peace he upon him) lay on bed during one night and said:Were there a pious person from amongst my companions who should keep a watch for me during the nightt? She said: We heard the noise of arms, whereupon Allah's Messenger (ﷺ) said: Who is it? And Sa'd b. Abi Waqqas said: Allah's MesseDger. I have come to serve as your sentinel. 'A'isha said: Allah' s Messenger (ﷺ) slept (such a sound sleep) that I heard the noise of his snoring

A'isha reported that Allah's Messenger (may peace he upon him) laid down on bed during one night on his arrival at Medina and said:Were there a pious person from amongst my Companions who should keep a watch for me durin. the night? She (A'isha) reported: We were in this state that we heard the clanging noise of arms. lie (the Holy Prophet) said: Who is it? He said: This is Sa'd b. Abi Waqqas. Allah's Messenger (ﷺ) said to him: What brings you here? Thereupon he said: I harboured fear (lest any harm should come to) Allah's Messenger (ﷺ), so I came to serve as your sentinel. Allah's Messenger (ﷺ) invoked blessings upon him. He then slept. This hadith has been transmitted on the authority of Ibn Rumh with a slight variation of wording

Abdullah b. 'Amir b. Rabi reported A'isha as saying:Allah's Messenger (ﷺ) went to bed one night; the rest of the hadith is the same