If the area of the blood on one's body or dress is less than that of a Dirham...
If the area of the blood on one's body or dress is less than that of a Dirham, and some moisture reaches it and spreads over its sides, the prayer offered with that blood is void, even if the blood and the moisture which has spread there, is not equal to the area of a Dirham.
If there is no blood on the body or dress of a person, but it becomes Najis because of contact with some moisture mixed with blood, prayer cannot be offered with it even if the part which has become Najis is less than the area of a Dirham.
If small dresses belonging to a person offering prayer, like his socks or skull-cap, which would not ordinarily cover his private parts, become Najis, and if they are not made of the parts of a carcass or an animsl whose meat is Halal (allowed) to eat, the prayer offered with them will be in order. But if they are made of the parts of a carcass or a Najis animal, as an obligatory precaution, the prayer offered with them will be void.
And there is no objection if one offers prayer with a Najis ring. Place WhereSalat Can Be Prayed There are seven conditions for the place where one can offer prayer on: First: The place where the prayer is offered should, as an obligatory precaution, be Mubah. If a person prays on a usurped property, then as an obligatory precaution, his prayer is void, even if he prays on a carpet, or a couch, or similar object.
Prayer offered in a property whose use and benefit belongs to someone elso, will be like the prayer offered on a usurped property, unless permission is taken from the entitled person. For example, if a house has been rented out, and the owner of the house, or anyone elso offers prayer in that house without permission of the tenant, then as a measure of precaution, his prayer is void.
If a person sitting in a mosque, is made to quit his place by someone who then occupies his place, the prayer offered there will be valid, though he will have committed a sin. If a person purchases a property with the sum of money from which Khums has not been paid by him but the transaction on the whole is in debt, like most of transactions, using that property will be lawful, but he owes the Khums of the money paid by him.
However if he purchases a property with a particular sum of money whose Khums has nat been paid by him, then his use of that property, without the permission of a Mujtahhid, is Halal (allowed) and as an obligatory precaution the prayers which he offers in it are void.