Umrah before Hajj: Permissible?

He is not sure whether his father’s Hajj was valid; can he do Hajj on his behalf after his death?

He intended to do tamattu’ but after ‘Umrah he fell sick and went back home, and did not do Hajj

Should he pay for his poor sister to do Hajj or pay off her husband’s debts?

Should she do Hajj and give charity on behalf of her mother who did not pray?

Taking money for doing hajj on behalf of one who is sick or deceased

Purity (tahaarah) is not an essential condition for standing in ‘Arafah

Any Virtue If ‘Arafah Falls on Friday?

A pilgrim died in ‘Arafah; is there any need to complete Hajj on his behalf or to do it all over again on his behalf?

He was given some charity that was came from riba-based wealth; can he go for hajj with it?