Numbers 32:24

לצנאכם FOR YOUR SHEEP — This word is from the noun form which is found in (Psalms 8:8): “Sheep (צנה) and oxen, all of them”, where, too, there is no א intervening between the נ and the צ. The א which here comes after the נ is in place of the ה of צנה (and לצנאכם is not the same form as לצאנכם with an inversion of the א and נ). I learned this from the work of R. Moses the Preacher. והיצא מפיכם תעשו AND DO THAT WHICH HATH GONE OUT FROM YOUR MOUTH, as a vow to the Most High God (cf. Numbers 30:3), because you have taken it upon yourselves to pass over for war until the end of the subjugation and division of the land; — for Moses asked of them only, (v. 22): “Let [the land] be subdued and afterwards ye may return”, but they undertook, (v. 18): “[we will not return to our houses] until [the children of Israel] have inherited”, so you see that they made an additional promise, to stay on the western side the seven years during which they were dividing the land. And so, indeed, they did (cf. Joshua XXII.).

בְּנֽוּ־לָכֶ֤ם עָרִים֙ לְטַפְּכֶ֔ם וּגְדֵרֹ֖ת לְצֹנַאֲכֶ֑ם וְהַיֹּצֵ֥א מִפִּיכֶ֖ם תַּעֲשֽׂוּ׃

Build cities for your little ones, and folds for your sheep; and do that which has proceeded out of your mouth.