Event Factoid: Zacharias pursued the ascetic practice of always keeping a stone in his mouth
that kept him from speaking superfluously. Anonymi 3772 followed him in this practice.
Sources:
E. W Brooks, trans.,Lives of the Eastern Saints I,Patrologia Orientalis 17.1 (1923), https://archive.org/stream/patrologiaorient17pariuoft#page/n7/mode/2up, p: 270.