Q 1: What is the religious opinion on the people who perform Hajj, but are not paying for it out of their own money?Q 2:
Is it valid for a young person to perform Hajj before getting married?
there is nothing wrong with Hajj performed at the expense of other individuals by way of Sadaqah (voluntary charity). If the money is Haram (ill-gotten), their Hajj is still valid, but they must make Tawbah (repentance to Allah) of this. (Part No. 11; Page No. 35)
the Hajj performed by a young person before getting married is valid. We do not know of any disagreement among the scholars in this regard.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.