"The sun set when the Messenger of Allah (ﷺ) was in Makkah, and he joined the two prayers in Sarif.:

A valley about 12 km northeast of Makkah on the way to Al-Madinah.
Sunan an-Nasa'i Book 6, Hadith 100
← Previous Hadith "Salim told me that his father said: 'I saw the Messenger of Allah (ﷺ), when he was in a hurry to travel, delaying Maghrib so that he could combine it with 'Isha'.'"

Sunan an-Nasa'i Book 6, Hadith 99 Next Hadith → "If the Messenger of Allah (ﷺ) wanted to travel quickly, he would delay Zuhr until the time of 'Asr and combine them, and he would delay Maghrib until he combined it with 'Isha' when the twilight had disappeared."

Sunan an-Nasa'i Book 6, Hadith 101