What is the religious ruling on a person who steals his mother's money, looks at his brothers' wives' underwear, and masturbates while doing so? Are these actions considered major sins, and will his repentance be accepted?

It is not permissible to enter the homes of brothers without permission, nor to look at their wives' clothes, nor to masturbate. Theft and abandoning prayer are among the major sins. Repentance is accepted and entails abstaining from the sin, regretting it, resolving not to return to it, and restoring rights to their owners. One must hasten to repent, maintain prayer, and return the stolen money to the mother. It is not necessary to inform the brothers and their wives of what you have done if it would lead to harm.