What is the grammatical role of “آمِنِينَ” in “ادْخُلُوهَا بِسَلَامٍ آمِنِينَ”?

Inshāʾ: Requestive and Non-requestive Forms, Imperative Constructions and Rhetorical Functions

• Nominative subject
• Noun of inna
• Genitive complement
• Circumstantial accusative, marked by yāʾ