Sayyiduna Abu Ayyub al-Ansari (may Allah be pleased with him) said that the Messenger of Allah (peace and blessings be upon him) combined Maghrib and Isha at Muzdalifah on the occasion of the Farewell Hajj.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الحج / 9490
Sayyiduna Abu Ayyub (may Allah be pleased with him) said that he prayed Maghrib and Isha together with the Prophet (peace and blessings be upon him) at Muzdalifah during the Farewell Hajj.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الحج / 9491
Ibn Umar (may Allah be pleased with them both) said that the Messenger of Allah (peace and blessings be upon him) offered Maghrib and Isha combined together at Muzdalifah.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الحج / 9492