It is permissible to spend the Share of the Imam (Sahmul-Imam) to fulfill the necessities of destitute believers, after referring to the Marji or his agents.
Applying the Sharia-defined punishments is the duty of the Prophet and the Imams (peace be upon them). No doubt, applying them is a form of justice and not an oppressive act. The punishment is set in the Sharia after the evidence is established and becomes clear in such a way that the noncompliant is considered as an oppressor against himself and the society. As such, the Sharia-defined punishment is not considered against human rights. The verse alluded to refers to the fact that the religion is based on beliefs, and beliefs are not imposed, and does not indicate that there is no punishment imposed by the Sharia for disbelief out of stubbornness and transgression.
Our edicts are based on the jurisprudence of the Imams of the Ahlulbait and the narrations that reached us in authentic ways which all Muslims are required to act upon, since the Prophet (peace be upon him and his holy progeny) ordered the nation of Islam to refer to the Ahlulbait and follow them in the famous well-known narration that is reported by numerous ways in the books of Shias and Sunnis: "I leave among you the two weighty things, the book of Allah and my progeny; as long as you follow both of them, you will never be misguided". Acting upon this narration and other narrations to follow the Ahlulbait is not obligatory on the Shias only, but it is an obligation on all Muslims.
It is prohibited to do so, without his consent.