Sunan an-Nasa'i · #563
أَخْبَرَنَا قُتَيْبَةُ بْنُ سَعِيدٍ، عَنْ مَالِكٍ، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ " لاَ يَتَحَرَّ أَحَدُكُمْ فَيُصَلِّيَ عِنْدَ طُلُوعِ الشَّمْسِ وَعِنْدَ غُرُوبِهَا " .
English
It was narrated from Ibn 'Umar that the Messenger of Allah (ﷺ) said:"No one of you should deliberately try to pray when the sun is rising, or when it is setting