While I was in the company of ʿAbdullah bin ʿUmar on the way to Mecca, he received the news of the severe illness of Safiya bint Abi Ubaid (i.e. his wife), so he proceeded at greater speed, and when the twilight disappeared, he dismounted and offered the Maghrib and ʿIsha 'prayers together and said, " I saw the Prophet ﷺ delaying the Maghrib prayer to offer it along with the ʿIsha' when he was in a hurry on a journey."
عَنْ صَفِيَّةَ بِنْتِ أَبِي عُبَيْدٍ شِدَّةُ وَجَعٍ فَأَسْرَعَ السَّيْرَ حَتَّى إِذَا كَانَ بَعْدَ غُرُوبِ الشَّفَقِ ثُمَّ نَزَلَ فَصَلَّى الْمَغْرِبَ وَالْعَتَمَةَ يَجْمَعُ بَيْنَهُمَا وَقَالَ إِنِّي رَأَيْتُ النَّبِيَّ ﷺ إِذَا جَدَّ بِهِ السَّيْرُ أَخَّرَ الْمَغْرِبَ وَجَمَعَ بَيْنَهُمَا