Simplify the following text for a Grade 2 native English-speaking person.
Original: For instance , while dhikr is commonly understood as the practice of remembering God , it has also been used in the Islamic sources to indicate God as the subject and the servant as the object of dhikr , and also been directly applied to the Islamic prophet , Muhammad , as embodiment of dhikr of God .
Simplified: Dhikr is a kind of worship to God .