سُنَنُ النَّسَائِيِّ
Sunan an-Nasa’i 596
The Book of the Times (of Prayer)
The Time When A Traveler May Combine Maghrib and 'Isha'
أَخْبَرَنَا قُتَيْبَةُ بْنُ سَعِيدٍ، حَدَّثَنَا الْعَطَّافُ، عَنْ نَافِعٍ، قَالَ أَقْبَلْنَا مَعَ ابْنِ عُمَرَ مِنْ مَكَّةَ فَلَمَّا كَانَ تِلْكَ اللَّيْلَةُ سَارَ بِنَا حَتَّى أَمْسَيْنَا فَظَنَنَّا أَنَّهُ نَسِيَ الصَّلاَةَ فَقُلْنَا لَهُ الصَّلاَةَ . فَسَكَتَ وَسَارَ حَتَّى كَادَ الشَّفَقُ أَنْ يَغِيبَ ثُمَّ نَزَلَ فَصَلَّى وَغَابَ الشَّفَقُ فَصَلَّى الْعِشَاءَ ثُمَّ أَقْبَلَ عَلَيْنَا فَقَالَ هَكَذَا كُنَّا نَصْنَعُ مَعَ رَسُولِ اللَّهِ صلى الله عليه وسلم إِذَا جَدَّ بِهِ السَّيْرُ .
It was narrated that Nafi' said: "We came back with Ibn 'Umar from Makkah. One night he kept on travelling until evening came, and we thought that he had forgotten the prayer!' But he kept quiet and kept going until the twilight had almost disappeared, then he stopped and prayed, and when the twilight disappeared he prayed 'Isha'. Then he turned to us and said: This is what we used to do with the Messenger of Allah (ﷺ) if he was in a hurry to travel.'"
Sunan an-Nasa'i, 596Sahih (Darussalam)