The Book of Prayers (Kitab Al-Salat) 
Muslim :: Book 4 : Hadith 1510
Salim reported from his father to be saying: I saw the Messenger of Allah (may peace be upon him) combining the sunset and Isha' prayers when he was in a hurry on a journey.
The Book of Prayers (Kitab Al-Salat)
Muslim :: Book 4 : Hadith 1510
Salim reported from his father to be saying: I saw the Messenger of Allah (may peace be upon him) combining the sunset and Isha' prayers when he was in a hurry on a journey.