Completion of the Holy Quran in seven nights

عَنْ عَبْدِ اللَّهِ بْنِ عَمْرٍو، قَالَ قَالَ رَسُولُ اللَّهِ صلّى اللّہ عليه وسلّم: اقْرَإِ الْقُرْآنَ فِي شَهْرٍ‏‏.‏ قُلْتُ إِنِّي أَجِدُ قُوَّةً حَتَّى قَالَ: فَاقْرَأْهُ فِي سَبْعٍ وَلاَ تَزِدْ عَلَى ذَلِكَ‏‏.‏

Hazrat ‘Abdullah ibn ‘Amr^ra reported:
“Allah’s Messenger^sa said to me, ‘Complete the recitation of the whole Quran in a month.’ I said, ‘I have the strength [to do more].’ He eventually said, ‘Then complete it in seven nights and do not do more than that [i.e., do not finish it in fewer than seven].”

(Sahih al-Bukhari, Kitab fada’il al-qur’an, Bab fi kam yuqra’u l-qur’an, Hadith 5054)