Sahih al-Bukhari 386

Arabic

حَدَّثَنَا آدَمُ بْنُ أَبِي إِيَاسٍ، قَالَ حَدَّثَنَا شُعْبَةُ، قَالَ أَخْبَرَنَا أَبُو مَسْلَمَةَ، سَعِيدُ بْنُ يَزِيدَ الأَزْدِيُّ قَالَ سَأَلْتُ أَنَسَ بْنَ مَالِكٍ أَكَانَ النَّبِيُّ صلى الله عليه وسلم يُصَلِّي فِي نَعْلَيْهِ قَالَ نَعَمْ‏.‏

English translation

Narrated Abu Maslama:Sa`id bin Yazid Al-Azdi: I asked Anas bin Malik whether the Prophet (ﷺ) had ever, prayed with his shoes on. He replied "Yes

Reference: Sahih al-Bukhari 386, Book of Prayers (Salat). English translation by Dr. Muhammad Muhsin Khan.