«وَقَدِ اعْتَلَقَ شَيْخٌ بِرِدْنِهِ يَدَّعِي أَنَّهُ فَتَكَ بِابْنِهِ»
An elder had seized his sleeve, claiming that he had killed the elder’s son.
Ridn refers to the sleeve or its edge. Fataka conveys a violent or sudden killing. The narrator reports an allegation; neither evidence nor a judicial finding has yet established it.