فَأَيُيِso which of us—I وَأَيُّand which اِبنِson of الحُصَينِal-Ḥuṣayn وَعَثعَثٍand ʿAthʿath
فَأَيُيِ وَأَيُّ اِبنِ الحُصَينِ وَعَثعَثٍ
إِذاwhen ما(emphatic particle) اِلتَقَيناwe meet كانَwill be بِالحِلفِto the pact أَغدَراmore treacherous
إِذا ما اِلتَقَينا كانَ بِالحِلفِ أَغدَرا
So which of us—I or Ibn al-Ḥuṣayn and ʿAthʿath—
O you, O son of Al-Husain and ʿAthʿath
when we meet, will be more treacherous to the pact?
When we met, he was the most treacherous with promises
Sol 6.1