וַיִּקַּ֨ח חָנ֜וּן אֶת־עַבְדֵ֤י דָוִיד֙ וַֽיְגַלְּחֵ֔ם וַיִּכְרֹ֧ת אֶת־מַדְוֵיהֶ֛ם בַּחֵ֖צִי עַד־הַמִּפְשָׂעָ֑ה וַֽיְשַׁלְּחֵֽם׃
So Hanun took David’s servants, and shaved them, and cut off their garments in the middle, even to their hips, and sent them away.
Read midrashic interpretation of I Chronicles 19:4: and classical rabbinic exegesis.