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Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
bukhari:5982 – Abū al-Walīd > Shuʿbah > Ibn ʿUthmān > Mūsá b. Ṭalḥah > Abū Ayyūb

It was said" "O Messenger of Allah! Inform me of a deed which will make me enter Paradise." (continues through a different chain in the next hadith)  

البخاري:٥٩٨٢ – 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