Sunan an-Nasa'i 499
سنن النسائي#499Sahihأَخْبَرَنَا عُبَيْدُ اللَّهِ بْنُ سَعِيدٍ، قَالَ حَدَّثَنَا أَبُو سَعِيدٍ، مَوْلَى بَنِي هَاشِمٍ قَالَ حَدَّثَنَا خَالِدُ بْنُ دِينَارٍ أَبُو خَلْدَةَ، قَالَ سَمِعْتُ أَنَسَ بْنَ مَالِكٍ، قَالَ كَانَ رَسُولُ اللَّهِ صلى الله عليه وسلم إِذَا كَانَ الْحَرُّ أَبْرَدَ بِالصَّلاَةِ وَإِذَا كَانَ الْبَرْدُ عَجَّلَ .
Khalid bin Dinar Abu Khaldah said:"I heard Anas bin Malik say: 'When it was hot, the Messenger of Allah (ﷺ) would wait until it cooled down to pray, and when it was cold he would hasten to pray
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
In-book reference: 6:6