Brahmacharya has no connection with the five vital airs, mind, understanding, the five senses of perception, and the five senses of action. It is, therefore, free from all the perceptions that the senses give. It is heard only as a word, and its form, is not seen, but can only be conceived.
लिङ्गसंयोगहीनं यच्छब्दस्पर्शविवर्जितम्। श्रोत्रेण श्रवणं चैव चक्षुषा चैव दर्शनम्॥