innā
Indeed We
ACC – accusative particle inna + PRON – 1st person plural object pronoun ā
Root Link: ا ن ن
arsalnā
[We] sent
V – 1st person plural (form IV) perfect verb + PRON – 1st person plural object pronoun nā
Root Link: ر س ل
ʿalayhim
upon them
P – preposition + PRON – 3rd person masculine plural object pronoun Ha
Root Link: ع ل ى
mus'tamirrin
continuous
N – genitive masculine indefinite (form X) active participle
Root Link: م ر ر