That saintly Dadhyañca, who is also known as Dadhīci, personally assimilated the spiritual science and then delivered it to the Aśvinī-kumāras. It is said that Dadhyañca gave them mantras through the head of a horse. Therefore the mantras are called Aśvaśira. After obtaining the mantras of spiritual science from Dadhīci, the Aśvinī-kumāras became jīvan-mukta, liberated even in this life.