וַיִּשְׁלַ֤ח יוֹאָב֙ תְּק֔וֹעָה וַיִּקַּ֥ח מִשָּׁ֖ם אִשָּׁ֣ה חֲכָמָ֑ה וַיֹּ֣אמֶר אֵ֠לֶיהָ הִֽתְאַבְּלִי־נָ֞א וְלִבְשִׁי־נָ֣א בִגְדֵי־אֵ֗בֶל וְאַל־תָּס֙וּכִי֙ שֶׁ֔מֶן וְהָיִ֕ית כְּאִשָּׁ֗ה זֶ֚ה יָמִ֣ים רַבִּ֔ים מִתְאַבֶּ֖לֶת עַל־מֵֽת׃
Kaya nagpasugo si Joab sa Tekoa at kumuha mula roon ng isang matalinong babae, at sinabi niya rito: “Magkunwari kang nagdadalamhati, magsuot ka ng damit-panluksa, at huwag kang magpahid ng langis; at maging tulad ka ng isang babaeng matagal nang nagdadalamhati para sa isang namatay.”
Rashi
Yoav sent to Tekuah. Our Rabbis said Because olive oil is found there, therefore wisdom is found there.1Menochos 85a.