The World Federation One Stop Fiqh

Ritual 126

If the pilgrimage is optional, there is no objection to the agent performing it on behalf of a number of people. With regard to obligatory pilgrimages, an agent can perform it on behalf of one person only, except if the pilgrimage has become obligatory on two or more persons jointly.

For example, if two persons make a vow that they will together with a third jointly contribute towards the remuneration of an agent to perform a pilgrimage, it is permissible for them to appoint one agent on their behalf.