וּבְשָׂרָ֖ם יִהְיֶה־לָּ֑ךְ כַּחֲזֵ֧ה הַתְּנוּפָ֛ה וּכְשׁ֥וֹק הַיָּמִ֖ין לְךָ֥ יִהְיֶֽה׃
And the flesh of them shall be thine, as the wave-breast and as the right thigh, it shall be thine.
Read kabbalistic (mystical) interpretation of Numbers 18:18: and classical mystical sources.