‏الصلاة : Hadeeth No:1805 Abu Sa'id al-Khudri reported Allaah's Messenger (sallAllaahu alayhi wa sallam) as saying: No prayer is valid after the 'Asr prayer till the sun sets and no prayer is valid after the dawn prayer till the sun rises....

‏فضائل الصحابة‏ : Hadeeth No:5926 'A'isha reported that Allaah'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 c...