And verily whoso is patient) for the iniquity he suffers (and forgiveth) and forgoes retaliation, (lo! That) patience and forgiveness, (verily, is (of) the steadfast heart of things) verily is the best of matters; it is also said this means: of the most resolute of matters. The verses from (And those who shun the worst of sins and indecencies…) to (…lo! that, verily, is (of) the steadfast heart of things) were revealed about Abu Bakr and his fellow believer 'Amr Ibn Ghazyah al-Ansari in relation to a dispute which happened between the two. Al-Ansari had, in this dispute, abused Abu Bakr al-Siddiq.