Messenger of Allah ﷺ said to me, "Recite the whole Qur'an in one month's time." I said, "But I have power (to do more than that)." Messenger of Allah ﷺ said, "Then finish the recitation of the Qur'an in seven days, and do not finish it in less than this period."  

قَالَ رَسُولُ اللَّهِ ﷺ اقْرَإِ الْقُرْآنَ فِي شَهْرٍ قُلْتُ إِنِّي أَجِدُ قُوَّةً حَتَّى قَالَ فَاقْرَأْهُ فِي سَبْعٍ وَلاَ تَزِدْ عَلَى ذَلِكَ  

The Messenger of Allah ﷺ said to me: Recite the whole of the Qur'An during every month. I said: I find power (to recite it) in a shorter period. He said: Then recite it in twenty nights. I said: I find power (to recite it in a shorter period even than this), whereupon he said: Then recite it in seven (nights) and do not exceed beyond it.  

وَأَحْسِبُنِي قَدْ سَمِعْتُهُ أَنَا مِنْ أَبِي سَلَمَةَ عَنْ عَبْدِ اللَّهِ بْنِ عَمْرٍو ؓ قَالَ قَالَ لِي رَسُولُ اللَّهِ ﷺ اقْرَإِ الْقُرْآنَ فِي كُلِّ شَهْرٍ قَالَ قُلْتُ إِنِّي أَجِدُ قُوَّةً قَالَ فَاقْرَأْهُ فِي عِشْرِينَ لَيْلَةً قَالَ قُلْتُ إِنِّي أَجِدُ قُوَّةً قَالَ فَاقْرَأْهُ فِي سَبْعٍ وَلاَ تَزِدْ عَلَى ذَلِكَ  

The Prophet ﷺ as saying to him: Complete the recitation of the Qu'ran in one month. He said: I have more strength. He (the Prophet) said: Complete the recitation in twenty days. He again said: I have more energy. He said : Recite in fifteen days. He again said: I have more energy. He said: Recite in ten days. He again said: I have more energy. He said: Recite in seven days, do not add to it. Abu Dawud said: The tradition narrated by Muslim is more perfect.  

أَنَّ النَّبِيَّ ﷺ قَالَ لَهُ اقْرَإِ الْقُرْآنَ فِي شَهْرٍ قَالَ إِنِّي أَجِدُ قُوَّةً قَالَ اقْرَأْ فِي عِشْرِينَ قَالَ إِنِّي أَجِدُ قُوَّةً قَالَ اقْرَأْ فِي خَمْسَ عَشْرَةَ قَالَ إِنِّي أَجِدُ قُوَّةً قَالَ اقْرَأْ فِي عَشْرٍ قَالَ إِنِّي أَجِدُ قُوَّةً قَالَ اقْرَأْ فِي سَبْعٍ وَلاَ تَزِيدَنَّ عَلَى ذَلِكَ