योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-60, verse-55

वाक्यसंविद्विहीनत्वान्मूकान्यन्यानि कानिचित् ।
स्पर्शसंविद्विहीनत्वादश्माङ्गानीव कानिचित् ॥ ५५ ॥

vākyasaṃvidvihīnatvānmūkānyanyāni kānicit ,
sparśasaṃvidvihīnatvādaśmāṅgānīva kānicit 55

55. There are some who are entirely dumb, and without the power of speech; and some again that having no power of touch or feeling, are as insensible blocks or stones.