וַיֵּ֧לֶךְ דָּוִ֛ד וַאֲנָשָׁ֖יו בַּדָּ֑רֶךְ (ס) וְשִׁמְעִ֡י הֹלֵךְ֩ בְּצֵ֨לַע הָהָ֜ר לְעֻמָּת֗וֹ הָלוֹךְ֙ וַיְקַלֵּ֔ל וַיְסַקֵּ֤ל בָּֽאֲבָנִים֙ לְעֻמָּת֔וֹ וְעִפַּ֖ר בֶּעָפָֽר׃ (פ)
E Davide e i suoi uomini andavano per la strada; e Shimei camminava sul fianco del monte dirimpetto a lui, e mentre andava malediceva, e scagliava pietre di fronte a lui e gettava polvere.
Rashbam
ולא יסקלונו?, a question. Stoning was considered as something despicable, a demeaning treatment of people, as we know from Samuel II 16,13 where Shimi ben Gerah cursed David and threw stones at him.