יִהְי֣וּ נֶֽגֶד־יְהוָ֣ה תָּמִ֑יד וְיַכְרֵ֖ת מֵאֶ֣רֶץ זִכְרָֽם׃
Let them be before the LORD continually, That He may cut off the memory of them from the earth.
Read halakhic rulings (Jewish law) on Psalms 109:15 from the Mishneh Torah and classical halakhic sources, free online.