Nabiyah bin Wahb says that when Umar bin Ubaidullah’s eyes started hurting, he asked Aban bin Uthman about this issue—what should he do? He replied by sending word that he could apply antimony (surma) of aloe (sabr), (he should be patient and not apply surma until he comes out of ihram), because I heard Sayyiduna Uthman (may Allah be pleased with him) narrate such a hadith from the Prophet (peace and blessings be upon him).