question #3 Sahih Muslim 685c, Book 6, Hadith 3 : What is the significance of interpreting religious practices based on personal understanding in Islam?

The prayer was prescribed as consisting of two rak’ahs, the prayer in travelling remained the same, but the prayer at the place of residence was completed. (Zuhri said he asked ‘Urwa why ‘A’isha said prayer in the complete form during journey, and he replied that she interpreted the matter herself as ‘Uthman did.)