וַיִּשְׁלַ֤ח אֵהוּד֙ אֶת־יַ֣ד שְׂמֹאל֔וֹ וַיִּקַּח֙ אֶת־הַחֶ֔רֶב מֵעַ֖ל יֶ֣רֶךְ יְמִינ֑וֹ וַיִּתְקָעֶ֖הָ בְּבִטְנֽוֹ׃
Lalu Ehud mengulurkan tangan kirinya, mengambil pedang itu dari paha kanannya, dan menikamkannya ke perut raja.
Metzudat David
And Ehud Sent: (his sword) when he was still struggling to stand
Metzudat Zion
And it got stuck: Thrust and insertion. As in Samuel 2:18:14 "and it was thrusted in the heart of Abshalom."