«وَلَمْ يَزِغْ وُدُّهُ فَيَغْضَبَ»
His affection has not strayed into angry resentment.
The verb zāgha / yazīghu means turning aside. Wudd is affection and loyalty, while ghaḍab denotes anger. The supplicant claims to remain attached to the patron rather than becoming hostile because of disappointment.
This is a self-presentational claim within the letter, not narrator-confirmed evidence about his entire conduct. It strengthens the appeal by portraying the applicant as worthy of help and respectful even in distress.