Bhagavad Gita 6.27
प्रशान्तमनसं ह्येनं योगिनं सुखमुत्तमम्।
उपैति शान्तरजसं ब्रह्मभूतमकल्मषम्।।6.27।।
Prashantamanasam hyenam yoginam sukhamuttamam
Upaiti shantarajasam brahmabhutamakalmasham
Simple meaning, written by AIFor the yogi whose mind is peaceful, whose rajas is calmed, who has become one with Brahman and is free from impurity, supreme happiness comes.