حَتَّىٰ تَأْتِيَهُمُ ٱلْبَيِّنَةُ ١
Sentence structure
حَتَّىٰ introduces the endpoint clause. تَأْتِيَ is subjunctive; attached هُم is object and ٱلْبَيِّنَةُ nominative subject.
Ayah summary
The disbelievers among the People of the Book and the polytheists did not leave their denial until the clear proof came.
حَتَّىٰ — until
Grammar: A particle introducing the endpoint and subjunctive clause.
تَأْتِيَهُمُ — comes to them
Grammar: A third-person feminine-singular subjunctive imperfect; attached هُم is object.
ٱلْبَيِّنَةُ — the clear evidence
Grammar: A defined feminine nominative subject of تَأْتِيَ.