question #3 Sahih Muslim 241c, Book 2, Hadith 39 : How does the concept of Hell-fire relate to the performance of religious duties in Islam?

The Messenger of Allah (ﷺ) lagged behind us on a journey. We travelled (back) and be took him; and then came the time of the afternoon prayer, and as we were going to wipe our feet he (the Holy Prophet) called out: Woe to the heels because of Hell-fire.