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The Holy Books
All holy books taught that Islam is the only true religion. That means all Prophets and Messengers were Muslims, that is, they believed in one God, and that this God is the only true God and he only deserves to be worshipped. The laws in the Quraan differed from previous laws of other Prophets. But the religion is one, ISLAM.
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The Two Testifications Shahadahs
Professing the Two Shahadahs: In regards to the blasphemer who wants to embrace Islam, the belief is not accepted without one uttering the Two Testifications (Shahadahs). In addition, the Muslim is obligated to recite the Two Testifications (Shahadahs) in every prayer for validity of that prayer. The Two Testifications are: I testify that no one is God except Allâh and I testify that Muḥammad is the Messenger of Allâh.
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Muslim Citadel Protection Evocations and Invocations
Invocations and Evocations (‘ADHKAR) Reported from the Messenger of Allâh to Recite Morning and Evening: the one who says them is protected and nothing harms him, by the will of Allâh. To be protected against sorcery, the evil eye, the nuisance of jinns ...
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How to Determine the Qiblah Direction for Prayer
al-’Imam ash-Shafi`iyy said in his book, Al-’Umm: “It is conceivable that Allah, the Exalted, ordered them with facing the direction of al-Qiblah by seeking its signs. He did not leave them to determine the direction by means which please them, cross their hearts, or delude them. Allah decreed not to leave them helpless without showing them the signs”. This means that Allah showed His slaves the acknowledge signs for seeking the direction of al-Qiblah. Hence, no attention is due to that which does not rely on religious proof.
https://www.islam.ms/en/?p=125
Tawassoul: Invocation of God by the Degree of the Prophets and the Virtuous
Tawassoul: Invocation of Allah by the degree of Prophets and the Virtuous is permitted in Islam believing that God is the Only One who creates benefit and harm.
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