The World Federation One Stop Fiqh

Ritual 362

A pilgrim may forget to wear ihram, either inadvertently or because of ignorance of the rules, until he has left Makkah. If he remembers or becomes aware of the rules at a later time, it is obligatory on him to return to Makkah, even if he is in Arafat; he should wear ihram from there.

If because of limited time, or for another reason, it is not possible to return to Makkah, he should wear ihram wherever he is. Similarly, if he remembers or becomes aware after the wuquf at Arafat, he should proceed to Makkah, where possible, and wear ihram there. However, if he does not remember or acquire the knowledge until after completing Hajj, his Hajj is valid.