וַיִּ֨חַן שָׁא֜וּל בְּגִבְעַ֣ת הַחֲכִילָ֗ה אֲשֶׁ֛ר עַל־פְּנֵ֥י הַיְשִׁימֹ֖ן עַל־הַדָּ֑רֶךְ וְדָוִד֙ יֹשֵׁ֣ב בַּמִּדְבָּ֔ר וַיַּ֕רְא כִּ֣י בָ֥א שָׁא֛וּל אַחֲרָ֖יו הַמִּדְבָּֽרָה׃
And Saul pitched in the hill of Hachilah, which is before Jeshimon, by the way. But David abode in the wilderness, and he saw that Saul came after him into the wilderness.
Read midrashic interpretation of I Samuel 26:3: and classical rabbinic exegesis.