The Prophet ﷺ used to offer the Maghrib and ʿIsha' prayers together whenever he was in a hurry on a journey.  

كَانَ النَّبِيُّ ﷺ يَجْمَعُ بَيْنَ الْمَغْرِبِ وَالْعِشَاءِ إِذَا جَدَّ بِهِ السَّيْرُ  

Messenger of Allah ﷺ used to offer the Zuhr and ʿAsr prayers together on journeys, and also used to offer the Maghrib and ʿIsha' prayers together. Narrated Anas bin Malik: The Prophet ﷺ used to offer the Maghrib and the ʿIsha' prayers together on journeys.  

كَانَ رَسُولُ اللَّهِ ﷺ يَجْمَعُ بَيْنَ صَلاَةِ الظُّهْرِ وَالْعَصْرِ إِذَا كَانَ عَلَى ظَهْرِ سَيْرٍ وَيَجْمَعُ بَيْنَ الْمَغْرِبِ وَالْعِشَاءِ  

Messenger of Allah ﷺ used to offer these two prayers together on journeys i.e. the Maghrib and the ʿIsha'.  

كَانَ النَّبِيُّ ﷺ يَجْمَعُ بَيْنَ صَلاَةِ الْمَغْرِبِ وَالْعِشَاءِ فِي السَّفَرِ وَتَابَعَهُ عَلِيُّ بْنُ الْمُبَارَكِ وَحَرْبٌ عَنْ يَحْيَى عَنْ حَفْصٍ عَنْ أَنَسٍ جَمَعَ النَّبِيُّ ﷺ