أَيْ رَبِّ مَنَعْتُهُ الطَّعَامَ وَالشَّهَوَاتِ بِالنَّهَارِ فَشَفِّعْنِي فِيهِ
My Lord, I kept this servant from food and desires by day, so accept my intercession for him.
Fasting’s plea relates to the person’s restraint from food and desires during the day. It points to the lived discipline of this worship.