Narrated 'Abdullah bin 'Amr:
that the Prophet (ﷺ) said: "He who recites the Qur'an in less than three (days), he does not understand it." (RU)
English reference (RU): Vol. 5, Book 43, Hadith 2949 (RU)
Arabic reference (RU): Book 46, Hadith 3202 (RU)