wa-inna
And indeed
REM – prefixed resumption particle wa + ACC – accusative particle inna
Root Link: ا ن ن
laka
for you
P – prefixed preposition lām + PRON – 2nd person masculine singular personal pronoun ka
Root Link: ل
la-ajran
surely (is) a reward
EMPH – emphatic prefix lām + N – accusative masculine indefinite noun
Root Link: ا ج ر