THE BOOK OF BELIEF (FAITH)
Sins are from ignorance and a sinner is not it disbeliever unless he worships others along with Allah.
If two parties (or groups) from among the believers fall to fighting, then make peace between them both.
Ad-Din (good, righteous deed') act of worship) loved most by Allah 3- J.- is that which is done regularly.
(What is said regarding) the fear of a believer that his good deeds may be annulled (lost) without his knowledge.