Fasting: what does the Muslim need to know?

Fasting is an act of worship by which the Muslim draws near to Allah, by abstaining from the things that break the fast from the rising of dawn to sunset with the intention, while guarding his tongue and limbs from sins.

Fasting Ramadan is obligatory on the Muslim who is accountable and able, and there are concessions and rulings for the sick, the traveller and others. A ruling is not dropped or made harsher by mere assumption.

The clear invalidators should be known, distinguishing between what occurred deliberately and what occurred by forgetfulness or without choice, and between agreed issues and issues that need detail.