Hadith: Abu Dhar Radiyallahu 'anhu narrates that Rasullullah Sallallahu 'alaihi wasallam told me: O Abu Dhar! If you go in the morning and learn a verse from the Book of Allah, it is better for you than performing one hundred Rak'at of Salat. And if you go in the morning and learn a chapter of knowledge, which may or may not be applicable at that time (for example learning the method of Tayyammum), it is better for you than performing a thousand Rak'at of Nafl Salat. (Ibne Majah: 219)