1 Sam 27:11

וְאִ֨ישׁ וְאִשָּׁ֜ה לֹֽא־יְחַיֶּ֣ה דָוִ֗ד לְהָבִ֥יא גַת֙ לֵאמֹ֔ר פֶּן־יַגִּ֥דוּ עָלֵ֖ינוּ לֵאמֹ֑ר כֹּֽה־עָשָׂ֤ה דָוִד֙ וְכֹ֣ה מִשְׁפָּט֔וֹ כָּל־הַ֨יָּמִ֔ים אֲשֶׁ֥ר יָשַׁ֖ב בִּשְׂדֵ֥ה פְלִשְׁתִּֽים׃

David did not leave a man or woman alive to be brought to Gath, for he said, “Otherwise they will report us, saying, ‘This is what David did.’” And this was David’s custom the whole time he lived in Philistine territory.