So He said to them, “This kind can come out by nothing but prayer and fasting.”
-Qur’an Surah 2:183
O ye who believe! Fasting is prescribed to you as it was prescribed to those before you, that ye may (learn) self-restraint. The translated -Qur’an to English I have, says,”Perchance you guard yourselves against evil”
I have read Mark Chapter 9 many times. Every time Christ was saying to the devote followers, “This kind can come out by nothing but prayer and fasting.” he meant we all must pray and use self-restraint.
More spiritual thought showing we must handle spiritual diseases in spiritual ways.