Ubaidullah b. 'Abdullah b. 'Umar reported on the authority of his father (Allah be pleased with them) that Allah's Messenger (ﷺ) combined the sunset and 'Isha', prayers at Muzdalifa and there was no prostration (i. e. any rak'ahs of Sunan or Nawafil prayers) in between them. He observed three rak'ahs of the sunset prayer and two rak'ahs of the 'Isha' prayer, and 'Abdullah (b. 'Umar) observed the prayers in this very manner (at Muzdalifa) until he met his Lord

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

Shu'ba reported this hadith with the same chain of transmitters and said:He (the Holy Prophet) observed the two prayers (together) with one iqama

Ibn 'Umar rep rte that Allah's Messenger (ﷺ) combined the sunset and 'Isha ' prayers at Muzdalifa. He observed three rak'ahs of the sunset prayer and two rak'ahs of the 'Isha' prayer with one Iqama

Sa'id b. Jubair reported:We came back along with Ibn 'Umar till we reached Muzdalifa. There he led us in the sunset and 'Isha' prayers with one iqama and we then proceeded and he said: This is how Allah's Messenger (ﷺ) led us in prayer at this place