deity but Allah) is the word of Tawhid (monotheism) which is the cornerstone of Islam. Allah states, And your Ilâh (God) is One Ilâh (God Allâh), Lâ ilâha illa Huwa (there is none who has the right to be worshipped but He), the Most Gracious, the Most Merciful.
So know (O Muhammad ﺻﻠﻰ ﺍﷲ ﻋﻠﻴﻪ ﺳﻠﻢ) that, Lâ ilâha illallâh (none has the right to be worshipped but Allâh), and ask forgiveness for your sin
That is because Allâh — He is the Truth (the only True God of all that exists, Who has no partners or rivals with Him), and what they (the polytheists) invoke besides Him, it is Bâtil (falsehood).
Whoever claims that it is permissible to associate partners with Allah and worships idols, trees, stones, prophets, kings, Jinn, etc., commits Shirk, Kufr, and fabricates the greatest lie against Allah. One becomes a Mushrik (one who associates others with Allah in His Divinity or worship) and Kafir (disbeliever), if one believes that this is permissible even if he does not act accordingly.
Likewise, whoever denies the wellestablished Islamic principles that Allah has prescribed is a Mushrik and a Kafir. Whoever denies the obligation of Salah (Prayer), Zakah (obligatory charity), Sawm (Fast) of Ramadan, or Hajj while having the means to perform it, or denies the prohibition of Zina (adultery), Khamr (intoxicant), sodomy, Riba (usury), ingratitude to parents, or any of the wellestablished Islamic precepts is a Mushrik and a Kafir. The Din is to worship Allah Alone and to believe in His ordinances such as the obligations and the prohibitions, so a Muslim must submit, believe, and holdfast to these commands and prohibitions.