יָ֤שֶׁת חֹ֨שֶׁךְ ׀ סִתְר֗וֹ סְבִֽיבוֹתָ֥יו סֻכָּת֑וֹ חֶשְׁכַת־מַ֝֗יִם עָבֵ֥י שְׁחָקִֽים׃
He made darkness His hiding-place, His pavilion round about Him; darkness of waters, thick clouds of the skies.
Read halakhic rulings (Jewish law) on Psalms 18:12: and classical halakhic sources.