Sunan ad-Darimi

Sayyiduna Abdullah bin Amr bin al-As (may Allah be pleased with him) said: I asked, “O Messenger of Allah! In how many days should I complete the recitation of the Noble Qur’an?” He said, “In one month.” I said, “I have the strength to do more than that.” He said, “Complete it in twenty-five days.” I said, “I have the strength to do more than that.” He said, “Complete it in fifteen days.” I said, “I have the strength to do more than that.” He said, “Complete it in ten days.” I said, “I have the strength to do more than that.” He said, “Complete it in five days.” I said, “I have the strength to do more than that.” The Prophet (peace and blessings be upon him) said, “Not less than this.”