What is the role of “yurājiʿūna” in “kharaja al-ṭullāb yurājiʿūna mulāḥaẓātihim”?

Supplementary Practice 16: Observing the Sky, Evidential Scope and Rhetorical Precision

• An adjective modifying a definite noun
• A circumstantial verbal clause with an affirmative imperfect
• Predicate of inna
• A conditional answer