 As for the causes of his death, several sources point to poisoning. Al-Maqqari recounts that Ibn Ma‛yub was a servant of the physician Abu l-‛Ala’ Ibn Zuhr, his enemy, and that Ibn Ma‛yub was suspected of poisoning him with an eggplant (Maqqari-N: vol. 4, pp. 12–13), but Abu l-‛Ala’ Zuhr (not Ibn Zuhr) had already died in 1130 at Cordova, and lived in Seville most of his life. The rivalry between the two was widely known and M. Forcada has exhaustively analyzed it on the base of some satirical verses ascribed to them (Forcada 2021) but the enmity should not be so extreme to cross the limit of poisoning. The general impression is that Yahyà ibn Yusuf Ibn Tashfin did not support Avempace any longer.