waraḥmatan
and a mercy
CONJ – prefixed conjunction wa (and) + N – accusative feminine indefinite noun
Root Link: ر ح م
lil'muḥ'sinīna
for the good-doers
P – prefixed preposition lām + DET – determiner prefix al + N – genitive masculine plural (form IV) active participle
Root Link: ح س ن