Verse
श्रीभगवानुवाच:इमं विवस्वते योगं प्रोक्तवानहमव्ययम् ।विवस्वान्मनवे प्राह मनुरिक्ष्वाकवेऽब्रवीत् ॥
The Blessed Lord said: This imperishable Yoga I gave to Vivasvan (the Sun-God), Vivasvan gave it to Manu (the father of men), Manu gave it to Ikshvaku (head of the Solar line).
Gītā 4·1