Is it permissible to pray, supplicate, and give charity on behalf of a deceased relative who was an alcoholic and did not pray, knowing that one who abandons prayer does not enter Paradise, and considering Allah Almighty's saying: "It is not for the Prophet and those who have believed to ask forgiveness for polytheists, even if they were relatives, after it has become clear to them that they are companions of Hellfire"?

One who dies not praying, either abandoned prayer out of denial or out of laziness. The jurists have agreed that whoever abandons prayer out of denial is an apostate. As for whoever abandons it out of laziness, they differed concerning him: Abu Hanifa does not consider him an apostate and imprisons him until he prays; Malik and Al-Shafi'i do not consider him an apostate but he is killed as a punishment if he does not pray; and the well-known opinion from Ahmad is that he is an apostate and is killed for apostasy. None of the scholars are known to have said that prayer should be made up on behalf of one who abandoned it, because the principle is that no one prays on behalf of another, and they have agreed on this. Whoever did not consider him an apostate permitted supplication for him and charity on his behalf. As for whoever considered him an apostate, he did not permit that, based on the Almighty's saying: {It is not for the Prophet and those who have believed to ask forgiveness for the polytheists, even if they were relatives, after it has become clear to them that they are companions of Hellfire}.