UtshovBhagavad Gita 6.12
तत्रैकाग्रं मनः कृत्वा यतचित्तेन्द्रियक्रियः।
उपविश्यासने युञ्ज्याद्योगमात्मविशुद्धये।।6.12।।
Tatraikagram manah kritva yatachittendriyakriyah
Upavishyasane yunjyadyogamatmavishuddhaye
Simple meaning, written by AIThere, making the mind one-pointed and controlling mind, senses and actions, he should sit on the seat and practise yoga for the purification of the self.