Sunan an-Nasa'i, Volume 3, Book 24, Hadith 3033 (DarusSalam) ⓘ
It was narrated that Ibn Umar said: "The Messenger of Allah prayed Maghrib and Isha in Jam (Al-Muzdalifah) with one Iqamah."
أَخْبَرَنَا عَمْرُو بْنُ مَنْصُورٍ، قَالَ حَدَّثَنَا أَبُو نُعَيْمٍ، قَالَ حَدَّثَنَا سُفْيَانُ، عَنْ سَلَمَةَ، عَنْ سَعِيدِ بْنِ جُبَيْرٍ، عَنِ ابْنِ عُمَرَ، قَالَ صَلَّى رَسُولُ اللَّهِ صلى الله عليه وسلم الْمَغْرِبَ وَالْعِشَاءَ بِجَمْعٍ بِإِقَامَةٍ وَاحِدَةٍ .
also referenced under: Hadith 3030 (Reference) & Book 24, Hadith 0 (In-Book)