Aoa! I Want To Know About Sauna And Nafal
Fuquha adopted different terminologies for different acts to categorize them. According to Fiqh Hanafi, the Nawafil that the holy prophet performed more punctually and emphasized are sunnah, and others are nafal. The holy prophet did not categorize them. In fact, besides farz, all other prayers are nawafil. They are not obligatory. However, one should perform them to get more sawab.