(15) باب جَوَازِ اشْتِرَاطِ الْمُحْرِمِ التَّحَلُّلَ بِعُذْرِ الْمَرَضِ وَنَحْوِهِ
Ibn `Abbas (Allah be pleased with him) reported that Duba`a intended to perform Hajj, and the Messenger of Allah (ﷺ) commanded her (to enter into the state of Ihram) with condition. She did it in compliance with the command of Allah's Apostle (ﷺ).
Reference: Sahih Muslim 1208 b
In-book reference: Book 15, Hadith 115
USC-MSA web (English) reference(deprecated numbering scheme): Book 7, Hadith 2760