If the Hajj by proxy was specified or dedicated to be for the current year...
If the Hajj by proxy was specified or dedicated to be for the current year, it would be obligatory for him to perform the Hajj by proxy first, and the obligation of the Hajj for him ceases to be valid, unless the fee [he earned] remained in his possession until the following year and was sufficient for the Hajj.
If one had some money but was not sure as to whether it was sufficient for the Hajj, because he was not sure of the cost of the Hajj, or he knew the cost of the Hajj but not sure of the amount he has, it would be obligatory for him to find out in each case. If one had sufficient money for the Hajj, but the money was not within his access, if he was able to obtain the money – without unusual difficulty or harm – even by seeking others’ help etc. the Hajj would be obligatory for him.
If however, he was not able to obtain his money in any way, the Hajj would not be obligatory for him so long as his access [to the money] was excused. If one obtained a sum of money that was sufficient for the Hajj, but it was not in time for the Hajj, it is not obligatory for him to save for the following Hajj season, and it is permissible for him to use that money for his need, or give it to others, or give it as a gift to whoever he wished.
If it remained in his possession until the next Hajj season, the Hajj would be obligatory for him. If the money that was sufficient for the Hajj was lost, whether before the trip to Hajj, during it, or after it, this renders him not mostatee’, i.e. unable to perform the Hajj, and the Hajj is not obligatory upon him. If he regains that ability afterwards, he would then be liable to the Hajj.
If due to an oversight, one forgot that he had sufficient sum to go to Hajj, or due to an oversight one did not realise that he was liable to Hajj, and he did not notice his oversight until after the loss of the money or after the Hajj season, he would not be considered liable to Hajj if he was not negligent – moqassir – in his oversight. Of course if the sum remained in his possession until the following year, the Hajj would then be obligatory upon him.
If one performed the Hajj while he is not mostatee’ – i.e. not meeting all the preconditions required before being liable to perform the Hajj – this Hajj would not qualify for Hajjat-al-Islam. If at a later date he became mostatee’, he would still be liable to the Hajj. The same is applicable, if he was assigned to perform the Hajj on behalf of someone else.