There are some verses on this subject-that person who, observing the vow of silence roams without giving any creature cause of fear, is never filled with any fear himself by any creature.
भवति चात्र श्लोकः-अभयं सर्वभूतेभ्यो दत्त्वा यश्चरते मुनिः। न तस्य सर्वभूतेभ्यो भयमुत्पद्यते क्वचित्॥