(6) CHAPTER. To offer three Raka of Maghrib prayer during a journey.
Narrated `Abdullah bin `Umar: I saw Allah's Apostle delaying the Maghrib prayer till he offered it along with the `Isha' prayer whenever he was in a hurry during the journey. Salim narrated, Ibn `Umar used to do the same whenever he was in a hurry during the journey. And Salim added, Ibn `Umar used to pray the Maghrib and `Isha' prayers together in Al-Muzdalifa.
Authentic