Sahih al-Bukhari 1978
Book 30: Fasting · Hadith 85
Hadith text
Narrated Mujahid from `Abdullah bin `Amr:The Prophet (ﷺ) said (to `Abdullah), "Fast three days a month." `Abdullah said, (to the Prophet) "I am able to fast more than that." They kept on arguing on this matter till the Prophet (ﷺ) said, "Fast on alternate days, and recite the whole Qur'an once a month." `Abdullah said, "I can recite more (in a month)," and the argument went on till the Prophet (ﷺ) said, "Recite the Qur'an once each three days." (i.e. you must not recite the whole Qur'an in less than three days)
Mujahid, Abdullah bin Amr ke hawale se: Nabi ne (Abdullah se) kaha: "Mahine mein teen din roza rakho." Abdullah ne (Nabi se) kaha: "Mujhme isse zyada roza rakhne ki taaqat hai." Woh iss maamle par baatcheet karte rahe yahan tak ke Nabi ne kaha: "Alternate din roza rakho, aur poore Quran ki ek baar mahine mein tilawat karo." Abdullah ne kaha: "Main isse zyada (ek mahine mein) tilawat kar sakta hoon," aur baatcheet jaari rahi yahan tak ke Nabi ne kaha: "Quran ki tilawat har teen din mein ek baar karo." (yaani poore Quran ki tilawat teen din se kam mein nahi karni chahiye.)
Sahih al-Bukhari 1978 · Book 30, Hadith 85