"I never saw the Messenger of Allah (ﷺ) combine any two prayers except in Al-Muzdalifah, and on that day he prayed Subh before its time."
Sunan an-Nasa'i Book 6, Hadith 115
← Previous Hadith It was narrated from Ibn 'Umar that the Prophet (ﷺ) prayed Maghrib and 'Isha' at Al-Muzdalifah.

Sunan an-Nasa'i Book 6, Hadith 114 Next Hadith → "I poured water for him from a small vessel and he performed a light Wudu'. I said to him: 'The prayer.' He said: 'The prayer is still ahead of you.' When he came to Al-Muzdalifah he prayed Maghrib, then they untied the saddles of their mounts and then he prayed 'Isha'."

Sunan an-Nasa'i Book 6, Hadith 116