Deuteronomy 14:1

לא תתגדדו YE SHALL NOT CUT YOURSELVES — i.e. you shall not make cuttings and incisions in your flesh for the dead in the way the Amorites do (Sifrei Devarim 96:11), because you are children of the Lord and it is therefore becoming for you to be comely and not cut about and with hair torn out. בין עיניכם [NOR MAKE ANY BALDNESS] BETWEEN YOUR EYES — i.e. adjoining the forehead. In another passage (Leviticus 21:5), however, it states, “They shall not make their head bald”! It, however, intends to make the entire head like between the eyes (בֵּין עֵינַיִם) [i.e., one must not make bald spots on any part of the head]. (Sifrei Devarim 96:13; cf. Rashi on Leviticus 21:5 and Note thereon).

בָּנִ֣ים אַתֶּ֔ם לַיהֹוָ֖ה אֱלֹהֵיכֶ֑ם לֹ֣א תִתְגֹּֽדְד֗וּ וְלֹֽא־תָשִׂ֧ימוּ קׇרְחָ֛ה בֵּ֥ין עֵינֵיכֶ֖ם לָמֵֽת׃

You are the children of the Lord your God: you shall not gash yourselves, nor make any baldness between your eyes for the dead.