This presentation discusses the Qur'anic concept of "Zulm" (wrong, injustice). It explains that associating partners with Allah (shirk) is considered the greatest Zulm. The presentation explores the meaning of Zulm as putting something in the wrong place and analyses why worshipping anything other than Allah amounts to injustice against Him. It emphasizes that shirk is strictly prohibited in Islam. The presentation was authored by Muqith Mujtaba Ali and aims to facilitate teachings from the Quran.