Hadith on Salat: Shorter surahs in day, longer at dawn

Jabir ibn Samurah reported: The Prophet, peace and blessings be upon him, would recite in the noon prayer, “By the night as it envelopes,” (92:1) and similar chapters to those in the afternoon prayer, and in the morning prayer he would recite longer than those

Source: Ṣaḥīḥ Muslim 459

Grade: Sahih (authentic) according to Muslim

عَنْ جَابِرِ بْنِ سَمُرَةَ قَالَ كَانَ النَّبِيُّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ يَقْرَأُ فِي الظُّهْرِ بِاللَّيْلِ إِذَا يَغْشَى وَفِي الْعَصْرِ نَحْوَ ذَلِكَ وَفِي الصُّبْحِ أَطْوَلَ مِنْ ذَلِكَ

459 صحيح مسلم كتاب الصلاة باب القراءة في الصبح