The Prophet (ﷺ) used to offer the Maghrib and `Isha' prayers together whenever he was in a hurry on a journey.
Sahih al-Bukhari Book 18, Hadith 26
← Previous Hadith Ibn `Umar said, "Allah's Messenger (ﷺ) used to pray the Nawafil on the back of his Mount (carriage) by signs facing any direction." Ibn `Umar used to do the same.

Sahih al-Bukhari Book 18, Hadith 25 Next Hadith → Allah's Messenger (ﷺ) used to offer the Zuhr and `Asr prayers together on journeys, and also used to offer the Maghrib and `Isha' prayers together. Narrated Anas bin Malik: The Prophet (ﷺ) used to offer the Maghrib and the `Isha' prayers together on journeys.

Sahih al-Bukhari Book 18, Hadith 27