A book translated into German which provides a brief explanation of Islam as the only religion that Allah accepts. It also takes a look at other religions to refute their principles and bases like the claimed divinity of the Prophet Jesus but shows his mother's noble prestige. In addition, it confirms the universal message of Islam and the wisdom of creating humanity and jinn.
A book in German explains the Quranic verse: "Indeed, Allah does not forgive association with Him, but He forgives what is less than that for whom He wills," provides polytheism definition and how Muslims protect themselves from this dangerous sin.
A book in German excerpted from the beginning of Dr. Bilal Philips' Monotheism Principles book. In this book, he speaks about monotheism, categories, virtue, and Allah's reward for monotheists.