וְאַבְשַׁ֣י בֶּן־צְרוּיָ֗ה הִכָּ֤ה אֶת־אֱדוֹם֙ בְּגֵ֣יא הַמֶּ֔לַח שְׁמוֹנָ֥ה עָשָׂ֖ר אָֽלֶף׃
A más de esto Abisai hijo de Sarvia hirió en el valle de la Sal dieciocho mil Idumeos.
Rashi
and Joab returned and smote of Edom, etc. [of] the eighteen thousand stated in Scripture (II Sam. 8:13, I Chron. 18:12), Abishai slew six thousand the first time, and Joab slew twelve thousand when he returned from battling Aram.
Rashi
When he fought Heb. בהצותו, as (Num. 26:9): “when they quarreled (בהצותם) with the Lord,” that he fought with them because they aided the Ammonites.