What did the scholars say about laughter?

"comparison to the greatness of the One who commands them, glorified be He, and what He deserves. And اللّٰه, glorified be He, knows best. §§U0007§§ Chapter: The Station of Joy Chapter: Mention of Joy in the القُرْآن Chapter: Among these is joy. The author of "Al-Manazil" said: The chapter of joy begins with the verse where اللّٰه Almighty says: "Say, 'In the bounty of اللّٰه and in His mercy—in that let them rejoice; it is better than what they accumulate.'" This verse is fittingly chosen, as اللّٰه commands His servants to find joy in His bounty and mercy."

"and the observer of that has moved to what is higher, which is the witnessing of the mentioned presence. His phrase "and makes the soul laugh" means that the hearing of response makes the soul laugh due to its joy from what it has gained from that hearing. He specifically mentions the soul laughing to distinguish it from joy that makes the self, intellect, and heart laugh, as this occurs before the lifting of the veil he referred to, where its place is the self."

"which is greater than the joy of one who finds their lost mount in a barren land after having lost hope of retrieving it. The point is that joy is the highest form of the heart's delight, pleasure, and happiness. Joy and delight are its bliss, while worry and sorrow are its torment. Joy in something is greater than mere contentment with it, for contentment is tranquility, calmness, and openness, while joy is pleasure, happiness, and delight."

"peace be upon him, had a slight curvature, and he would only smile, not laugh. Whenever I looked at him, I would say, He has coal in his eyes, but he does not. Abdullah ibn al-Harith ibn Juz said, I have not seen anyone smile more than the Messenger of Allah, peace be upon him. Abdullah ibn al-Harith, may Allah be pleased with him, also said, The laughter of the Messenger of Allah, peace be upon him, was only a smile."

"When he was angry, he would turn away and frown, and when he was pleased, he would lower his gaze. His laughter was mostly smiling, revealing teeth like the seeds of a pomegranate. Chapter What Has Been Narrated About The Laughter Of The Messenger Of Allah, Peace Be Upon Him Jabir ibn Samurah, may Allah be pleased with him, said, The leg of the Messenger of Allah, peace be upon him, had a slight curvature, and he would only smile, not laugh."

"Yet, if people notice, it brings him joy and comfort, easing the hardship of worship from his heart. This joy indicates a hidden form of riya, a layer through which joy seeps. If not for the heart’s inclination towards people, such joy would not manifest upon being observed. Riya lies latent like fire hidden in stone; exposure of his acts by creation reveals signs of joy."

"jealousy, or mock them or attribute their deeds to showing off. This joy is an indicator of the good faith of Allah's servants. A sign of sincerity in this type is that his joy in others' praise is akin to his joy in being praised. As for the blameworthy aspect, which is the fifth, it is when one's joy results from the establishment of his status in people's hearts, so they praise and exalt him, tend to his needs, and honor him wherever he goes."

"This laughter is out of love and joy for them, just as He will laugh at the martyr when He meets them on the Day of Resurrection, rejoicing in their arrival. There is no harm in affirming these attributes, for they bring a unique joy and laughter, governed by the same principles as His satisfaction, love, will, and other attributes."

"The point is that this joy, which no joy resembles, is joy at the performance of a commanded act — repentance — and this indicates that this commanded act is more beloved to Him than the non-occurrence of the prohibited act, by whose non-occurrence repentance, its effect and its purport, would be lost. If it be said: He rejoiced at repentance only because it is the abandonment of what is forbidden, so the joy was at an abandonment — the reply is: it is not so, for sheer abandonment"

"And his fear, his hope, his joy, his gladness, and his delight are joined to Him alone, so that he fears no other, hopes in no other, and rejoices in no other with the fullness of joy, nor is gladdened by any other with the utmost gladness. Though some joy and gladness may come to him by means of a creature, yet complete joy, perfect gladness, delight, bliss, coolness of the eye, and the repose A Noble Principle: I Pondered This Matter and Found Its Root"