How long are men allowed to have their hair?

The topic of how long men are allowed to have their hair is addressed in various hadiths. The Prophet Muhammad ﷺ encouraged shaving the head or shortening hair as part of the rituals of Hajj, and he emphasized the virtues associated with both practices. In a narration, the Prophet said: "O Allah, forgive those who shave their heads." When asked about those who shorten their hair, he repeated the request for forgiveness three times before finally saying, And those who shorten their hair. Sunan Ibn Majah 26:162SunniSahih (per Al-Albani).

Additionally, scholars interpret these hadiths as allowing men to keep their hair at any length they prefer, as long as it is neatly kept and not in a style considered unbecoming or unkempt. However, during specific rituals, such as Hajj, men are required to either shave their heads or shorten their hair as part of the completion of their rites.