The third aspect of monotheism is monotheism in the work of God. Unity of the work of God means to recognize that the world with all its systems, ways, causes and effects is the work of Allah alone and is originated from His will. Nothing in the world is self-existing including any action or work. There is no movement, effect or force, but does lead to Him the Almighty. If fire burns, if water grows the vegetable, its all because God has empowered them through certain laws in the nature. Hence, they are all in constant need of Allah in their existence as well as their functionality.
Q. Does this mean when the fire burns it is not really the fire which burns, its rather God? Doesn't this lead to the denotation of the law of cause and effect?
How can one believe in unity of God in action and at the same time believe in the law of cause and effect?
When prophet Ibrahim as Quran is quoting says:
“And when I am ill, it is He who heals me.” 1
Is it Allah who heals or it is the medicine?