(Imām Bukhārī narrates): Muhammad bin Abi Bakr Al-Muqaddami narrated to us, he said: Harami bin Umarah narrated to us, he said: Abu Khaldah narrated to us, he is Khalid bin Dinar, he said: I heard Hazrat Anas bin Malik, may Allāh be pleased with him, saying that
when there was intense cold, the Prophet ﷺ would offer the prayer early, and when there was intense heat, he would offer the prayer by cooling it down, that is, Jumu'ah.
Yunus bin Bukair said: Abu Khaldah informed us: he said the word "prayer" and did not mention Jumu'ah. And Bishr bin Thabit said: Abu Khaldah narrated to us, he said: The Amir of Jumu'ah led us in prayer, then he said to Hazrat Anas, may Allāh be pleased with him: How did the Prophet ﷺ offer the Zuhr prayer?
حَدَّثَنَا مُحَمَّدُ بْنُ أَبِي بَكْرٍ المُقَدّمِيُّ، قَالَ حَدَّثَنَا حَرَمِيُّ بْنُ عُمَارَة، قَالَ حَدَّثَنَا أَبُو خَلْدَةَ هُوَ خَالِدُ بْنُ دِينَارٍ، قَالَ سَمِعْتُ أَنَسَ بْنَ مَالِكٍ
يَقُولُ كَانَ النَّبِيُّ صَلَّى اللهُ عَلَيْهِ وَسَلَّمَ إِذَا اشْتَدَّ البَرْدُ بَكَّرَ بِالصَّلاةِ، وَإِذَا اشْتَدَّ الحَرُّ أَبْرَدَ بِالصَّلاَةِ ، يَعْنِي الجُمُعَةَ
Reference: Sahih Al Bukhari 906