Hadith.5526 - Muhammad ibn Ya'qub Al-Kulayni, may Allah (swt) be pleased with him, narrated from Muhammad ibn Yahya from Muhammad ibn Al-Husayn from Muhammad ibn Qays from someone who narrated from Abu Abdullah (as), who said regarding a man who died and appointed someone as the guardian of his affairs while leaving behind a young son.
When the boy grew up, he went to the guardian and said
"Return my wealth to me so I can get married," but the guardian refused. The boy then went and committed adultery.
Abu Abdullah (as), said: "Two-thirds of the sin of this man's adultery is upon the guardian who withheld his wealth and did not give it to him, which would have allowed him to marry."