It is narrated from Sayyiduna Abdullah bin Amr (may Allah be pleased with them both) that he said: the Messenger of Allah (peace and blessings be upon him) said to me: "Read (complete) the Qur'an in (one) month." I said: "I have the strength (for more than that)." He (peace and blessings be upon him) said: "Then read it in three (days)."
No one narrated this hadith from Talhah bin Musarrif (may Allah have mercy on him) except al-Harish bin Sulaym (may Allah have mercy on him), and no one from al-Harish (may Allah have mercy on him) except Abu Dawud (may Allah have mercy on him); and Abu Hafs (may Allah have mercy on him) is alone in narrating it.