«عَبْدِي حُرٌّ إِنْ لَمْ آتِكَ حَتَّى تُغَدِّيَنِي»
“My slave is free if I do not come to you so that you feed me.”
Coming is treated as the act connected to the purpose of being fed, not as an activity that literally extends until the meal. Accordingly, when he comes but the host does not feed him, the legal condition is not assessed simply by treating the missed meal as a missed temporal endpoint.
The event of coming has its own role as the cause; this is not identical to the oath about remaining with someone until his debt is paid.