In a hadith ash- Sharif, it was said, "The difference between the believer and the unbeliever is namaz," that is, the believer performs namaz, and the unbeliever does not. Munafiqs, however, sometimes perform it and sometimes do not. Munafiqs will undergo very bitter torment in Hell. Abdullah ibn Abbas (radiallahu 'anh), the leader of mufassirs, said that he heard Rasulullah say, "Those who do not perform namaz will find Allahu ta'ala angry on the Day of Resurrection."