Wahb ibn Munabbih said: Abdullah ibn Amr asked the Prophet (ﷺ); In how many days should one complete the recitation of the Qur'an? He said: In forty days. He then said: In one month. He again said: In twenty days. He then said: In fifteen days. He then said: In ten days. Finally he said: In seven days.
Sunan Abi Dawud Book 6, Hadith 25
← Previous Hadith The Prophet (ﷺ) said: He who recites the Qur'an in a period less than three days does not understand it.

Sunan Abi Dawud Book 6, Hadith 24 Next Hadith → Alqamah and al-Aswad said: A man came to Ibn Mas'ud. He said: I recite the mufassal surahs in one rak'ah. You might recite it quickly as one recites verse (poetry) quickly, or as the dried dates fall down (from the tree).

But the Prophet (ﷺ) used to recite two equal surahs in one rak'ah; he would recite (for instance) surahs an-Najm (53) and ar-Rahman (55) in one rak'ah, surahs Iqtarabat (54) and al-Haqqah (69) in one rak'ah, surahs at-Tur (52) and adh-Dhariyat (51) in one rak'ah, surahs al-Waqi'ah (56) and Nun (68) in one rak'ah, surahs al-Ma'arij (70) and an-Nazi'at (79) in one rak'ah, surahs al-Mutaffifin (83) and Abasa (80) in one rak'ah, surahs al-Muddaththir (74) and al-Muzzammil (73) in one rak'ah, surahs al-Insan (76) and al-Qiyamah (75) in one rak'ah, surahs an-Naba' (78) and al-Mursalat (77) in one rak'ah, and surahs ad-Dukhan (44) and at-Takwir (81) in one rak'ah.

Abu Dawud said: This is the arrangement of Ibn Mas'ud himself

Sunan Abi Dawud Book 6, Hadith 26