Psalms 88:11 Halakhah

הֲלַמֵּתִ֥ים תַּעֲשֶׂה־פֶּ֑לֶא אִם־רְ֝פָאִ֗ים יָק֤וּמוּ ׀ יוֹד֬וּךָ סֶּֽלָה׃

Wilt Thou work wonders for the dead? Or shall the shades arise and give Thee thanks? Selah

Read halakhic rulings (Jewish law) on Psalms 88:11: and classical halakhic sources.