Chasidut על ירמיהו 17:8

Nachmanides quotes as a source for his explanation of the name Yovel a verse in Jeremiah, Ve-al yuval yishallach shorashav, “And its roots will be sent forth” (Jer. 17:8). Yovel is when spiritual roots spread out to return their offshoots home. Yovel’s nature is further reflected in its two defining laws.