KAṬHA UPANISHAD · 1.1.2

तँ ह कुमारँ सन्तं दक्षिणासु
नीयमानासु श्रद्धाविवेश सोऽमन्यत ॥ २॥

tam̐ ha kumāram̐ santaṃ dakṣiṇāsu
nīyamānāsu śraddhāviveśa so’manyata ॥ 2॥

As the gifts were led past, faith took possession of him who was yet a boy unwed and he pondered:

Sri Aurobindo · CWSA 18, p. 101