Sayyiduna Imran bin Husain (may Allah be pleased with him) narrates: I heard the Noble Prophet (peace and blessings be upon him) say: "Whoever laughs out loud during prayer should perform ablution again and repeat the prayer." Hasan has narrated this: "Whoever laughs out loud will perform ablution again and repeat the prayer." This hadith has been transmitted by Sufyan, who is weak, and his status in the science of hadith is very poor. The same narration, with another chain, is also reported from Sayyiduna Anas bin Malik (may Allah be pleased with him) from the Noble Prophet (peace and blessings be upon him).