Sayyiduna Abu Hurayrah (may Allah be pleased with him) narrates in a marfu' form: "The pen has been lifted from three: from the boy until he has a wet dream; and if he does not have a wet dream, then until he becomes eighteen years old."
Sayyiduna Anas (may Allah be pleased with him) narrates in a marfu' form: "When a boy becomes fifteen years old, the prescribed punishments (hudud) will be established upon him."
Muhammad bin al-Qasim al-Taikani mentioned the first of these within a long fabricated (mawdu') hadith, and this Muhammad bin al-Qasim was known for fabricating hadith; we seek refuge with Allah from being forsaken. The chain of the Anas narration is weak; it is not sound.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الحجر / 11307