Is it permissible to perform Haj for your parents ( if they were nable to do so during their lifetime)?
In the name of Allah, We praise Him, seek His help and ask for His forgiveness. Whoever Allah guides none can misguide, and whoever He allows to fall astray, none can guide them aright. We bear witness that there is no one (no idol, no person, no grave, no prophet, no imam, no dai, nobody!) worthy of worship but Allah Alone, and we bear witness that Muhammad (saws) is His slave-servant and the seal of His Messengers.
If the parents could not perform their Hajj duty for any reason in their lifetimes, it is permissible for their children to do Hajj for them. It is termed Hajj-e-badl, and the son/daughter doing the Hajj must make the intention to do it for their parents. It is expected that Allah will accept the pilgrimage on behalf of the son/daughters parent/s.
Whatever written of Truth and benefit is only due to Allahs Assistance and Guidance, and whatever of error is of me. Allah Alone Knows Best and He is the Only Source of Strength.
Your Brother in Islam,