Bhagavad Gita 8.12

सर्वदानि संयम्य मनो हृदि निरुद्ध च |
मूर्धन्यधायात्मनः प्राणमस्थितो योगधारणम्

Translation

Restraining all the gates of the body and fixing the mind in the heart region, and then drawing the life-breath to the head, one should get established in steadfast yogic concentration.