Question: Brother S.A.M.L. from Abyssinia (Ethiopia), now living in the city of Jeddah, asks: In my country, Abyssinia I acquired some Islaamic knowledge. However, I do not know to what degree is it authentic, as I think I learned some Sufi misconceptions, which I realized only after coming here. Please, give me useful instructions in this regard, may Allaah reward you!
Answer: Having sound beliefs is the topmost fundamental and basis of Islaam and faith. These principles represented a point of departure for all messengers of Allaah (peace be upon them), including our Prophet Muhammad (peace be upon him), in calling their nations.Prophet Muhammad stayed in Makkah for thirteen years calling people to believe in the Oneness of Allaah, being devoted to Him and believing in His Names and Attributes, that He is the Lord of the worlds, the All-Knowing Creator and that He Alone is worthy of being worshipped. The Arabs knew that Allaah is the Lord of the worlds and that He is their Creator. However, they associated partners and other deities in worship with Him, including trees, stones, idols, humans (sons of Adam), jinn and other deities. Therefore, the Prophet (peace be upon him) taught them that Allaah Alone is worthy of being worshipped and that it was obligatory on them to devote worship to Him Alone. He said: My people, say “There is no god but Allaah” so that you may prosper. Yet, they denied his call and 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!”
Accordingly, sound belief is the topmost principle and the fundamental pillar of Islaam. Thus, a seeker of knowledge must give special care to it until he gains clarity and becomes versed in it… read more here.