אֶֽזְכְּרָ֥ה נְגִינָתִ֗י בַּ֫לָּ֥יְלָה עִם־לְבָבִ֥י אָשִׂ֑יחָה וַיְחַפֵּ֥שׂ רוּחִֽי׃
In the night I will call to remembrance my song; I will commune with mine own heart; And my spirit maketh diligent search
Read halakhic rulings (Jewish law) on Psalms 77:7: and classical halakhic sources.