בִּפְרֹ֤עַ פְּרָעוֹת֙ בְּיִשְׂרָאֵ֔ל בְּהִתְנַדֵּ֖ב עָ֑ם בָּרֲכ֖וּ יְהוָֽה׃
When men let grow their hair in Israel, When the people offer themselves willingly, Bless ye the LORD.
Read halakhic rulings (Jewish law) on Judges 5:2: and classical halakhic sources.