Chapter: Departing from 'Arafat to Al-Muzdalifah. It is recommended to pray Maghrib and 'Isha together in Al-Muzdalifah on this night
Abdullah b. Yazid al-Khatmi reported on the authority of Abu Ayyub (Allah be pleased with him) that he prayed the sunset and 'Isha' prayers (together) at Muzdalifa in the company of Allah's Messenger ( صلی اللہ علیہ وسلم ) on the occasion of the Farewell Pilgrimage.
Authentic
