Taittiriya Upanishad 1.4.1

1.4.1

yaśchandasāmṛṣabho viśvarūpaḥ /
chandobhyo 'dhyamṛtātsaṃbabhūva /
sa mendro medhayā spṛṇotu /
amṛtasya deva dhāraṇo bhūyāsam /
śarīraṃ me vicarṣaṇam /
jihvā me madhumattamā /
karṇābhyāṃ bhūri viśruvam /
brahmaṇaḥ kośo 'si medhayā pihitaḥ /
śrutaṃ me gopāya /
āvahantī vitanvānā // 1//

The Om that is the most exalted in the Vedas, that pervades all words, and that emerged from the immortal Vedas as their quintessence, may he (Om that is Indra), the supreme Lord, gratify me with intelligence. O Lord, may I be the receptacle of immortality. May my body be fit; may my tongue be surpassingly sweet; may I hear much through the ears. You are the sheath of Brahman; you are covered by (worldly) wisdom. Protect what I have heard. Then vouchsafe to me who am her (i.e. Prosperity's) own, that Prosperity which brings, increases, and accomplishes quickly for me clothes, cattle, food, and drink for ever, and which is associated with furry and other animals. Svāhā. May the Brahmacārins (i.e. students) come to me from all sides. Svāhā. May the Brahmacārins come to me in various ways. Svāhā. May the Brahmacārins come to me in the proper way. Svāhā. May the Brahmacārins have physical self-çontrol. Svāhā. May the Brahmacārins have mental self-control. Svāhā.