Question: We ask Your Eminence to explain to us the meaning of the first pillar of Islaam, highlighting its requisites and how it can be implemented by people. What is the ruling on not knowing an aspect of this testimony?
Answer: Allaah (Exalted be He) sent His Prophet Muhammad (peace be upon him) to humankind in general, Arabs and non-Arabs, humans and jinn, and males and females. He was to call them to believe in the Oneness of Allah, being devoted to Him and having faith in the Prophet (peace be upon him), in all that was revealed to him and in all messengers, angels, heavenly revealed books, the Last Day, Paradise, Hellfire, and Predestination, the sweet and the bitter thereof. One also has to believe that Allaah (Exalted be He) has predestined, known, enumerated, and recorded all things. Thus, anything that happens is predestined by Allaah (Exalted be He).He ordered people to testify that there is no god but Allaah. Actually, it is the first thing to which he called people and the first pillar of Islaam. However, most people refused to respond to and denied his call. Moreover, Quraysh said, as is narrated by Allaah (Exalted be He) in the Qur’aan, “Has he made the aalihah (gods) (all) into One Ilaah (God – Allaah). Verily, this is a curious thing!” Thus, Allaah (Glorified be He) also says about them, Truly, when it was said to them: Laa ilaaha illaa Allaah “(none has the right to be worshipped but Allaah),” they puffed themselves up with pride (i.e. denied it). And (they) said: “Are we going to abandon our aalihah (gods) for the sake of a mad poet?” Actually, they refused the Islaamic call as they had for so long been worshipping idols and other deities besides Allaah (Exalted be He)… read more here.