Worship only God Alone; Avoid major sins such as adultery and murder; Put your trust in God Alone; Do not invoke any other gods besides Him; Have faith that He will provide for you even if you are poor .

In this hadith, the Prophet Muhammad [SAW] was asked what the most grievous sin was. He replied that it was shirk or polytheism - setting up a rival to Allah. This means worshipping anyone or anything other than Allah alone. He also mentioned three other sins that are considered very serious in Islam - adultery with one's neighbor's wife, killing one's own child out of fear of poverty and invoking any other god besides Allah. These sins are all considered major transgressions in Islam and should be avoided at all costs. It is important to remember that only Allah has the power to provide for us and protect us from harm; no one else can do this for us. We must always put our trust in Him alone and not rely on anyone else for our needs or safety.