Charak Samhita
ज्वलत्यात्मनि संरुद्धं तत् सत्त्वं संवृतायने। शुद्धः स्थिरः प्रसन्नार्चिर्दीपो दीपाशये यथा ॥१५॥
The mind, focused on the soul with its movement obscured, pure and stable, shines as the lamp shines with steady and luminous bright flame in a lamp case.
english translation
jvalatyAtmani saMruddhaM tat sattvaM saMvRtAyane। zuddhaH sthiraH prasannArcirdIpo dIpAzaye yathA ॥15॥
hk transliteration by Sanscript