Reference: Fataawa Manaar al-Islaam – Volume 1, Page 133, Question No.101
Question: What is the ruling regarding abandoning the Salaat al-Fajr?
Response: In abandoning the Salaat al-Fajr, if what is implied [in the question] is to abandon performing it in congregation, then that is haraam and a sin. That is because it is obligatory upon the male that he prays with the congregation.
And if what is implied [in the question] is that he abandons praying altogether, or he does not pray except after sunrise, then he is in extreme danger, so much so that some of the people of knowledge are of the opinion that whoever delays a [obligatory] prayer until its time expires without an Islaamically legal reason, then as a result he is a disbeliever. So it is obligatory upon everyone whose condition is such to repent to Allaah [alone] and to revert to worshiping his Lord.
