Sahih al-Bukhari 5982
Book 78: Good Manners and Form (Al-Adab) · Narrated by Abu Ayyub Al-Ansari
Arabic
حَدَّثَنَا أَبُو الْوَلِيدِ، حَدَّثَنَا شُعْبَةُ، قَالَ أَخْبَرَنِي ابْنُ عُثْمَانَ، قَالَ سَمِعْتُ مُوسَى بْنَ طَلْحَةَ، عَنْ أَبِي أَيُّوبَ، قَالَ قِيلَ يَا رَسُولَ اللَّهِ، أَخْبِرْنِي بِعَمَلٍ، يُدْخِلُنِي الْجَنَّةَ.
English translation
Narrated Abu Ayyub Al-Ansari:It was said" "O Allah's Messenger! Inform me of a deed which will make me enter Paradise." (continues through a different chain in the next hadith)
Reference: Sahih al-Bukhari 5982, Book of Good Manners and Form (Al-Adab). English translation by Dr. Muhammad Muhsin Khan.