In Islamic culture, the term "kafir" refers to a person who disbelieves in God as per Islam, denies his authority, or rejects the tenets of Islam; or simply all those who are not Muslims—those who do not believe in the guidance of Islamic prophet Muhammad. The word "kafir" is derived from the word "Kufr", which means to conceal or to reject. In Islamic terminology, "Kafir" means one who conceals or rejects the truth of Islam and a person who rejects. The word "kafir" is the opposite of the term "Muslim". The term has different meanings depending on the context of the Arabic sentence in which it is used in the Quran. It can be used in the literal sense to refer to farmers who cover seeds in the earth when they till, or in a theological sense to refer to those who will be judged in the hereafter as disbelievers, who were insincere in their life and deliberately rejected the truth which they. It is important to note that the term is considered offensive and perceived as "theologically violent" by some, and the worlds largest independent Islamic organization, Nahdlatul Ulama, has urged Muslims to refrain from using the word to refer to non-Muslims.