question #1 Sahih Muslim 1207a, Book 15, Hadith 111 : What is the significance of making a conditional intention for Hajj in Islam?

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.