Stoning the الجمرات by proxy is جائز for those who have a genuine inability to perform the stoning themselves. This includes the sick, the very elderly who cannot walk to the الجمرات, pregnant women who would be endangered by the crowds, disabled الحجاج who cannot reach the stoning area, and children whose guardians stone on their behalf. All four schools of jurisprudence permit this with minor differences in detail.
الشيخ ابن باز ruled that the proxy should first stone for themselves at each Jamarah, then stone for the person they represent. The sequence is: throw seven pebbles at the first Jamarah (al-Sughra) for yourself, then seven for the represented person; then move to the second Jamarah (al-Wusta) and do the same; then to Jamrat al-Aqabah (al-Kubra) and do the same. This way, the proxy completes all three الجمرات for themselves and then for the other person in the correct order.
الشيخ ابن عثيمين emphasized that the proxy should only be appointed when the person is genuinely unable to stone — not merely for convenience. He noted that crowding alone is not a sufficient excuse for an able-bodied person, as crowding is the norm during الحج. However, he acknowledged that for women, the elderly, and those with medical conditions, the extreme crowding and potential danger at the الجمرات constitute a valid excuse. The اللجنة الدائمة confirmed that the proxy must have already performed their own الحج obligations before representing another.