The Boundary for the Age of Majority for Boys is from Thirteen to Fourteen Years of Age

Saʿd b. ʿAbd Allāh narrated to us; from Aḥmad b. Muḥammad b. ʿĪsā; from Aḥmad b. Muḥammad b. Abī Naṣr al-Bazanṭī; from Abū al-Ḥusayn al-Khādim, the pearl merchant; from ʿAbd Allāh b. Sinān; from Abū ʿAbd Allāh (ʿas) about whom it was said by ʿAbd Allāh, "My father asked him while I was present about an orphan, when do they attain majority? He answered, 'When they reach puberty.' My father asked, 'And what is (the sign) of their puberty?' He answered, 'Having wet dreams.'" He continues, "My father then asked, 'Occasionally a boy reaches eighteen years, give or take, and they do not have wet dreams; what then?' He answered, 'When he has reached the age that things become mandatory for him to complete, he has attained majority, unless he is mentally incompetent or disabled."

"When a boy reaches the age of majority at thirteen years and begins his fourteenth year, what is mandatory for those who have had wet dreams is mandatory for him, whether or not he has had a wet dream. From this point, his sins are recorded against him; his good deeds are recorded for him; and all of his wealth becomes permissible to him, unless he is disabled or mentally incompetent."