السلام عليكم ورحمة الله وبركاته حياكم الله وبياكم Ustadh, what is the longest length that a man can grow his hair? جزاكم الله خيرا ونفع بكم

It is advisable, when growing the hair longer than the shoulders, that it should not lead to standing out (i.e., out of the ordinary), lack of dignity, or anything similar — as Ibn Mufliḥ mentioned in al-Ādāb al-Sharʿiyyah. At times, trimming the hair for a man may be more fitting than growing it long, depending on his circumstances. Wāʾil ibn Ḥujr (may Allah be pleased with him) said: I came to the Messenger of Allah ﷺ while I had long hair. When he saw me, he said: “Dhubāb, Dhubāb.” So I went back and cut it, then I came to him the next day. He said: “I did not mean you, and this is better.” Narrated by Abū Dāwūd and authenticated by al-Albānī. “Dhubāb” means misfortune.