הֲל֣וֹא זֶה֮ צ֣וֹם אֶבְחָרֵהוּ֒ פַּתֵּ֙חַ֙ חַרְצֻבּ֣וֹת רֶ֔שַׁע הַתֵּ֖ר אֲגֻדּ֣וֹת מוֹטָ֑ה וְשַׁלַּ֤ח רְצוּצִים֙ חָפְשִׁ֔ים וְכָל־מוֹטָ֖ה תְּנַתֵּֽקוּ׃
Is not this the fast that I have chosen? To loose the fetters of wickedness, To undo the bands of the yoke, And to let the oppressed go free, And that ye break every yoke?
Rashi on Isaiah
fetters Heb. חַרְצֻבּוֹת, an expression of tying and binding.