God has sent guidance & laws through his Messengers -Prophet (s).
We are required to know them and submit to their teachings, out of free will /choice
given to us.
We can then fulfill the purpose of life, worship, and elevate our soul, to obtain salvation and eternal Rewards.
Fiqh/Laws/Shariah/ regulate ALL aspects of Life in Islam- Topic Index
Law n Fiqh books
like
Eating, Marriage ,
Transacting & in
Death
It details the methods of
Daily Prayers,
Fasting ,
Khums ,
Conditions for Enjoining Good(Amr bil Maroof) etc.