If you don't know something about Islam and have done it does it require punishment?

Answer 1

In the name of Allah, Most Gracious, Most Merciful.

Quran 2:286. Allah does not charge a soul except [with that within] its capacity. It will have [the consequence of] what [good] it has gained, and it will bear [the consequence of] what [evil] it has earned. "Our Lord, do not impose blame upon us if we have forgotten or erred. Our Lord, and lay not upon us a burden like that which You laid upon those before us. Our Lord, and burden us not with that which we have no ability to bear. And pardon us; and forgive us; and have mercy upon us. You are our protector, so give us victory over the disbelieving people."Tafsir al-Jalalayn

God charges no soul save to its capacity, that is, what it is capable of bearing; for it is what it has merited, of good and its reward, and against it is what it has earned, of evil and its burden: no person shall be requited for another's sin or for what he has not earned, even if he was tempted to do it. Say: Our Lord, take us not to task, by way of chastisement, if we forget, or err, by straying from the right path unknowingly - as You used to take to task those before us: God has lifted this [burden] from this community, as reported in hadīth. The petition here, then, is a way of acknowledging God's favour; our Lord, burden us not with a load, an affair which we cannot bear, such as You did lay upon those before us, namely, upon the Children of Israel, as for example, the killing of oneself in repentance, the paying of a quarter of one's property for alms, and the severing of the impure part. Our Lord, do not burden us beyond what we have the power, the strength, to bear, of obligations and trials; and pardon us, effacing our sins, and forgive us, and have mercy on us, with mercy added to Your forgiveness; You are our Patron, our Master and the Guardian of our affairs; so grant us assistance against the disbelieving folk, by establishing definitive proof [for us] and victory over them in battle, for it is expected of a patron that he assist his clients against their enemies. In a hadīth it is stated that when this verse was revealed and the Prophet (s) was reciting it, after each word it was said to him, "Granted".

Look at the shaded part, "Our Lord, do not impose blame upon us if we have forgotten or erred.

So everyone can do mistakes. The what to do? Allah knows this. And this is what Allah says to humanity through Muhammad PBUH 14 centuries ago (Say) "Our Lord, do not impose blame upon us if we have forgotten or erred..." If our mistake and our sin is done uncounciously, then we will pray to Allah to forgive us, and if we do sin knowingly, then we will make repentance, promising that we will not do that sin anymore.

Wassalaam!!!