Charak Samhita
इन्द्रियाणि च सङ्क्षिप्य मनः सङ्क्षिप्य चञ्चलम्। प्रविश्याध्यात्ममात्मज्ञः स्वे ज्ञाने पर्यवस्थितः ॥२१॥
The knower of one's self should control his sense organs, and the fickle, restless mind and then enter spirituality to establish himself in self-knowledge.
english translation
indriyANi ca saGkSipya manaH saGkSipya caJcalam। pravizyAdhyAtmamAtmajJaH sve jJAne paryavasthitaH ॥21॥
hk transliteration by Sanscript