"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."
عَنْ رَسُولِ اللَّهِ ﷺ أَنَّهُ كَانَ إِذَا عَجِلَ بِهِ السَّيْرُ يُؤَخِّرُ الظُّهْرَ إِلَى وَقْتِ الْعَصْرِ فَيَجْمَعُ بَيْنَهُمَا وَيُؤَخِّرُ الْمَغْرِبَ حَتَّى يَجْمَعَ بَيْنَهَا وَبَيْنَ الْعِشَاءِ حِينَ يَغِيبُ الشَّفَقُ