kadhālika
Thus
P – prefixed preposition ka + DEM – masculine singular demonstrative pronoun
Root Link: ذ ل ك
salaknāhu
We have inserted it
V – 1st person plural perfect verb + PRON – 1st person plural object pronoun nā + PRON – 3rd person masculine singular possessive pronoun ha
Root Link: س ل ك
l-muj'rimīna
(of) the criminals
DET – determiner prefix al + N – genitive masculine plural (form IV) active participle
Root Link: ج ر م