Sahih Muslim 794
Sahih Muslim · Book 6: The Book of Prayer - Travellers · Mentioning the recitation of the Prophet (saws) of Surat al-Fath on the day of the conquest of Makkah
This hadlth has been narrated by Khalid al-Harith with the same chain of transmitters (with these words):
وَحَدَّثَنَاهُ يَحْيَى بْنُ حَبِيبٍ الْحَارِثِيُّ ، حَدَّثَنَا خَالِدُ بْنُ الْحَارِثِ ، ح وَحَدَّثَنَا عُبَيْدُ، اللَّهِ بْنُ مُعَاذٍ حَدَّثَنَا أَبِي قَالاَ، حَدَّثَنَا شُعْبَةُ ، بِهَذَا الإِسْنَادِ نَحْوَهُ وَفِي حَدِيثِ خَالِدِ بْنِ الْحَارِثِ قَالَ عَلَى رَاحِلَةٍ يَسِيرُ وَهُوَ يَقْرَأُ سُورَةَ الْفَتْحِ .
(The Holy Prophet) was reciting Surat al-Fath as he was travelling on his mount.