Is it permissible for a student of knowledge from the holy lands to perform Hajj on behalf of a deceased man who had not fulfilled the obligation of Hajj, knowing that his family sent him money to perform Hajj on his behalf, and is this considered a complete Hajj or a charity?

It is obligatory to appoint someone to perform Hajj on behalf of the deceased from their estate, even if they did not make a will to that effect. The preponderant opinion is that the deputy should perform Hajj from where Hajj became obligatory upon the deceased, i.e., from their country. Others, however, are of the view that it is sufficient to perform it from the miqat (definition). Sheikh Al-Uthaymeen preferred that this is not obligatory, and it is permissible for Hajj to be performed on their behalf even from Mecca, especially if their financial means are limited. It is not a condition to pay the full expenses to the deputy; if they volunteer to perform Hajj or waive some of the expenses, the Hajj is valid.