«إِلَى أَنْ جَدَحَتْ لَهُ يَدُ الْإِمْلَاقِ كَأْسَ الْفِرَاقِ»
Until the hand of poverty stirred for him the cup of separation.
Imlāq is severe poverty and firāq is parting. Poverty becomes a hand that prepares a bitter cup. The verb jadaḥat helps create the image of mixing a drink.
The event beneath the metaphor is concrete: economic hardship compels Abū Zayd to leave the friendship he had enjoyed.