The Mandukya Upanishad with Gaudapada’s Karika and Shankara’s Commentary
Kārikā, verse 1.20
तैजसस्योत्वविज्ञान उत्कर्षो दृश्यते स्फुटम् ।
मात्रासंप्रतिपत्तौ स्यादुभयत्वं तथाविधम् ॥ २० ॥
taijasasyotvavijñāna utkarṣo dṛśyate sphuṭam |
mātrāsaṃpratipattau syādubhayatvaṃ tathāvidham || 20 ||
When Taijasa is intended to be described as ‘U’, the reason of their being ‘Superior’ (in respective cases) is seen to be quite clear. Their being in ‘the middle’ is also another plain ground. All these explanations are as before.