As a eunuch cannot beget children on women, as a cow does not procreats on another cow, as a bird lives in vain that is featherless, even so is a Brahmana that without Mantras.
यथा षण्ढोऽफलः स्त्रीषु यथा गौर्गवि चाफला। शकुनिर्वाप्यपक्षः स्यान्निर्मन्त्रो ब्राह्मणस्तथा॥