Bhagavad Gita 6.14
प्रशान्तात्मा विगतभीर्ब्रह्मचारिव्रते स्थितः।मनः संयम्य मच्चित्तो युक्त आसीत मत्परः॥
praśāntātmā vigatabhīrbrahmacārivrate sthitaḥ |manaḥ saṃyamya maccitto yukta āsīta matparaḥ ||
Serene-minded, fearless, firm in the vow of a Brahmachari, having controlled their mind, thinking of Me and balanced in mind, let them sit, having Me as their supreme goal.
With peace in his heart and no fear, observing the vow of celibacy, with his mind controlled and fixed on Me, let the student lose himself in contemplation of Me.
Our plain-language meaning of this verse is waiting for scholar review.