Yahya related to me from Malik from Ibn Shihab from Salim ibn
Abdullah that Abdullah ibn Umar said, "Someone who is held back from
going to the House by illness can only come out of ihram after he has
done tawaf of the House and say between Safa and Marwa. If it is
absolutely necessary for him to wear any ordinary clothes, or undergo
medical treatment, he should do that and pay compensation for it."
Muwatta Malik Book 20, Hadith 103