The Book of Prayers (Kitab Al-Salat)

Muslim :: Book 4 : Hadith 1509

Nafi' reported that when Ibn 'Umar was in a state of hurry on a journey, he combined the sunset and 'Isha' prayers after the twilight had disappeared, and he would say that when the Messenger of Allah (may peace be upon him) was in a state of hurry on a journey, he combined the sunset and 'Isha' prayers.