Sayyiduna Jabir (may Allah be pleased with him) said: "Smiling does not break the prayer; as long as a person does not laugh out loud (the prayer is not broken)." The same narration is also transmitted with another chain as a "marfu‘" narration.

Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) says: When a person laughs during the prayer, it becomes obligatory upon him to repeat the prayer.

Humaid bin Hilal narrates: Sayyiduna Abu Musa Ash'ari (may Allah be pleased with him) set out with a delegation, and among this delegation was a blind man from the tribe of Abdul Qais. Sayyiduna Abu Musa Ash'ari (may Allah be pleased with him) was leading the prayer; when everyone went into bowing (ruku'), they lowered their heads, and the blind man who was behind them fell into a well. The narrator named Ahnaf states: When I heard his voice as he fell into the well, everyone present except for me and Sayyiduna Abu Musa Ash'ari (may Allah be pleased with him) started laughing. Sayyiduna Abu Musa (may Allah be pleased with him) completed the prayer and inquired: What happened to these people? They informed him: So-and-so person fell into the pit. So Sayyiduna Abu Musa ordered them to repeat the prayer.

Humaid bin Hilal narrates: Sayyiduna Abu Musa Ash'ari (may Allah be pleased with him) was leading his companions in prayer. His companions saw something that made them laugh, so after finishing the prayer, Sayyiduna Abu Musa Ash'ari said: Whoever among you laughed should repeat the prayer.

It is narrated about Sayyiduna Abu Musa Ash'ari, may Allah be pleased with him: He was leading the people in prayer, and the people saw something due to which some of them laughed while following Sayyiduna Abu Musa. So after completing the prayer, Sayyiduna Abu Musa, may Allah be pleased with him, said: Whoever among you laughed should repeat the prayer.

Sayyiduna Jabir (may Allah be pleased with him) narrates: The Noble Prophet (peace and blessings be upon him) was leading his companions (may Allah be pleased with them) in the ‘Asr prayer, and during the prayer, he smiled. When he finished the prayer, it was said: O Messenger of Allah! You smiled during the prayer? The narrator states: The Noble Prophet (peace and blessings be upon him) said:“Mikail (peace be upon him) passed by me, and there was dust on his wings. He smiled when he saw me, so I smiled when I saw him. He was returning after pursuing a group of (the enemy).”

Sahl bin Mu'adh narrates from his father that the Prophet (peace be upon him) said: "The one who laughs during prayer, the one who looks here and there, and the one who cracks his fingers are all of the same status."

Sayyiduna Jabir (may Allah be pleased with him) said: Whoever laughs during the prayer, it is not obligatory for him to perform ablution; this ruling was for those who were performing prayer behind the Prophet Muhammad (peace and blessings be upon him).