The attitude of a muslim who like to judge other muslims as infidels and shirk never actually taught in the religion of Islam and not also exemplified by the Prophet Muhammad (P.B.U.H) because when a muslim accuses another muslim as a heretic then it is indeed a reflection of the high passions surrounding his personality.
That message was conveyed by "KH Mustofa Bisri" or familiarly called "Gus Mus" in one of his lectures. According to Gus Mus, everyone who is a martyr is Muslim. No one has the right to judge whether someone has left Islam, as long as he is still a martyr. Even if a Muslim seldom performs the prayer, has not yet performed the Hajj, and still does not pay Zakat, we are not entitled to justify the Muslim as infidel.
"People who say lailahaillallah are Muslims. Muslims have not prayed yet, Muslims have not hajj much yet, Muslims have not had more zakat. But as soon as he is a martyr, it is already Islam, "said Kiai who is also the caregiver of the Raudlatut Thalibin Islamic Boarding School, Rembang, Central Java.