كيف يمكن التعامل مع صديق ترك الصلاة وبدأ يكفر ويسخر من الدين؟

Disbelief (Kufr), mockery of religion, and abandoning prayer are among the gravest sins, and there is no sin greater than disbelief. Allah Almighty does not forgive associating partners with Him, and whoever associates partners with Him, Allah has forbidden Paradise for him, and his abode shall be the Fire. Likewise, mockery of Allah, His verses, and His Messenger is disbelief after having believed.

If you have exerted your utmost effort to guide your friend, and he does not turn back from his error, then you must distance yourself from him and seek righteous friends. For Allah Almighty said to His Prophet: "Indeed, you do not guide whom you like, but Allah guides whom He wills." The danger of bad friends is immense in this world and the Hereafter, and the wrongdoer will regret befriending them on the Day of Resurrection. A person is upon the religion of his intimate friend, so let each of you look at whom he befriends.