Sayyiduna Saeed bin Mundhir Ansari (may Allah be pleased with him) narrates that he said: O Messenger of Allah (peace and blessings be upon him)! Can I recite the Qur'an in three nights? The Prophet (peace and blessings be upon him) said: "If you have the strength (then recite it)." He said that he used to recite it like this until he passed away.