sri-bhagavan uvaca

putra hiranyagarbhasya

 manasah sanakadayah

papracchuh pitaram suksmam

 yogasyaikantikim gatim

 

Translation: 

 

The Supreme Personality of Godhead said: Once, the mental sons of Lord Brahma, namely, the sages headed by Sanaka, inquired from their father about the difficult subject matter of the supreme goal of yoga.