OET interlinear 2 SAM 20:10

uW Translation Notes:

Note 1 topic: figures-of-speech / pronouns

וַ⁠יַּכֵּ⁠הוּ֩ בָ֨⁠הּ אֶל־הַ⁠חֹ֜מֶשׁ וַ⁠יִּשְׁפֹּ֨ךְ מֵעָ֥י⁠ו אַ֛רְצָ⁠ה וְ⁠לֹא־שָׁ֥נָה ל֖⁠וֹ וַ⁠יָּמֹ֑ת

(Some words not found in UHB: and,Amasa not on_~_guard to,sword which/who [was]_in,the_hand_of Yōʼāⱱ/(Joab)'s and,he,struck_him with,it to/towards the,belly and,he_poured_out bowels_of,his towards=land and=not year to=him/it and=he/it_died and,Joab and,Abishai his/its=brother pursued after seven son_of Bikrī )

If it would be helpful to your readers, you could use names instead of pronouns in order to clarify who did what to whom here. Alternate translation: [And Joab struck Amasa with the sword in the stomach, and Amasa’s intestines poured out to the ground, and Joab did not do again to Amasa, and Amasa died.]

Note 2 topic: figures-of-speech / idiom

וְ⁠לֹא־שָׁ֥נָה ל֖⁠וֹ

and=not (Some words not found in UHB: and,Amasa not on_~_guard to,sword which/who [was]_in,the_hand_of Yōʼāⱱ/(Joab)'s and,he,struck_him with,it to/towards the,belly and,he_poured_out bowels_of,his towards=land and=not year to=him/it and=he/it_died and,Joab and,Abishai his/its=brother pursued after seven son_of Bikrī )

The author is using the phrase he did not do again to him as a common expression of his culture to mean that Joab did not repeat the action of stabbing Amasa. If this phrase does not have that meaning in your language, you could use a comparable expression from your language that does have that meaning, or you could state the meaning plainly. Alternate translation: [and he did not stab him a second time]