וַיָּ֣שֶׂם אֹתָ֗ם עַ֚ל כִּתְפֹ֣ת הָאֵפֹ֔ד אַבְנֵ֥י זִכָּר֖וֹן לִבְנֵ֣י יִשְׂרָאֵ֑ל כַּאֲשֶׁ֛ר צִוָּ֥ה יְהוָ֖ה אֶת־מֹשֶֽׁה׃ (פ)
And he put them on the shoulder-pieces of the ephod, to be stones of memorial for the children of Israel, as the LORD commanded Moses.
Read halakhic rulings (Jewish law) on Exodus 39:7: and classical halakhic sources.