kadhālika
Thus
P – prefixed preposition ka + DEM – masculine singular demonstrative pronoun
Root Link: ذ ل ك
naslukuhu
We let it enter
V – 1st person plural imperfect verb + 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