A: When a deaf and mute boy reaches the age of puberty, he will be held legally accountable for observing several types of Taklif (meeting the conditions to be held legally accountable for actions such as Salah and others), and he should be taught what he is required to do by writing and signs, due to the general legal evidence indicating the obligation of Taklif for whoever reaches the age of puberty while having sanity. Puberty is attained by completing the age of fifteen, discharging of semen out of sexual desire in a sexual dream and the like, or growing coarse hair around the frontal genital area, and in case of women, menstruation period is also added. Moreover, his guardian should fulfill the Zakah and other financial duties on his behalf, as they should also teach him whatever is unknown to him by all possible means until he understands Allah's Obligations and Prohibitions. Allah (Glorified be He) says: So keep your duty to Allâh and fear Him as much as you can And the Prophet (peace be upon him) said: If I command you to do something, do as much of it as you can . Thus, the Mukallaf who does not hear, talk, or is inflicted with dumbness or deafness should fear Allah as much as they can through abiding by obligations and avoiding prohibitions. They should also have good understanding of religion according to their capability by watching, writing, and using signs till they understand what is required. Allah is the One Who grants success.