It is narrated from Sayyiduna Ibn Umar (may Allah be pleased with them both) that the Prophet (peace and blessings be upon him) performed Maghrib and Isha prayers at Muzdalifah with a single Iqamah, and did not offer any voluntary prayers between them or after them.
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 5186
Hadith Gradingحکم دارالسلام:إسناده صحيح ، خ : 1673 .