What is the ruling on committing sodomy, and what must one who repents from it do?

Sodomy is one of the gravest sins and indecencies, and its perpetrator deserves punishment in this world and the Hereafter. What you did, engaging in preliminaries to sodomy with your cousin, is a heinous and forbidden act, and you must repent from it immediately.

Repentance involves abandoning the sin, feeling deep remorse for what you have done, and making a sincere resolve never to return to it. Distance yourself from the causes that led to this abomination and from associating with bad company. Choose righteous companionship that will help you obey Allah.

Fill your free time with beneficial activities and exercise, and frequently supplicate and seek Allah's help. You must conceal your sin and not tell anyone what you have done, for the Prophet, peace and blessings be upon him, said: "O people, it is time for you to cease violating the boundaries of Allah. Whoever commits any of these abominations should conceal himself with the concealment of Allah, for whoever exposes himself to us, we will apply to him the Book of Allah."