sahasra-sirasam saksad

 yam anantam pracaksate

sankarsanakhyam purusam

 bhutendriya-manomayam

 

Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 

 

The threefold ahankara, the source of the gross elements, the senses and the mind, is identical with them because it is their cause. It is known by the name of Sankarsana, who is directly Lord Ananta with a thousand heads.