«جَاءَنِي الْقَوْمُ حَاشَا زَيْدٍ»
jāʾanī: verb and object pronoun.
al-qawmu: nominative subject.
ḥāshā: treated as a preposition in this genitive analysis.
Zaydin: genitive after ḥāshā.
Other grammars also give a verbal analysis for ḥāshā; this slide explains the source’s genitive construction.