Sa'id b. Jubair reported that he observed the sunset and 'Isha' prayers at Muzdalifa with (one) iqama. He narrated on the authority of Ibn 'Umar (Allah be pleased with them) that he observed prayers like this and Ibn 'Umar (Allah be pleased with them) narrated that Allah's Apostle (ﷺ) did like this.
Reported by Muslim (No. 1288b, 1288c) and Ahmad (No. 5038).
‘Abdullāh ibn ‘Umar (may Allah be pleased with him) reported that the Prophet (may Allah's peace and blessings be upon him) combined the Maghrib and the ‘Ishā' prayers (at Muzdalifah) with one Iqāmah. He did not offer any voluntary prayers in between or after either of them.
جَمَعَ النَّبِيُّ صلى الله عليه وسلم بَيْنَ الْمَغْرِبِ وَالْعِشَاءِ بِجَمْعٍ، كُلُّ وَاحِدَةٍ مِنْهُمَا بِإِقَامَةٍ، وَلَمْ يُسَبِّحْ بَيْنَهُمَا وَلاَ عَلَى إِثْرِ كُلِّ وَاحِدَةٍ مِنْهُمَا.