Messenger of Allah, I intend to perform Hajj, but I am ill. Thereupon Allah's Apostle (ﷺ) said: Enter Into the state of Ihram on condition that you would abandon it when Allah would detain you.
Sahih Muslim Book 15, Hadith 112
← Previous Hadith Did you intend to perform Hajj? She said: By Allah, (I intend to do so) but I often remain ill, whereupon he (the Holy Prophet) said to her: Perform Hajj but with condition, and say: O Allah, I shall be free from Ihram where you detain me. And she (Duba`a) was the wife of Miqdad.

Sahih Muslim Book 15, Hadith 111 Next Hadith → This hadith has been reported on the authority of A'isha through another chain of transmitters.

Sahih Muslim Book 15, Hadith 113