Sarvopanshado Gavo - Geetha Dyana Sloka 4th Stanza in English 

 

Sarvopanshado Gavo Dogdha gopala nandana

Partho vathsaha sudhir bogtha dugdham geethamrutham mahat

Meaning:-

If  all the upanishads are considered to be cows

then Lord Krishna is the Milker who give that cow's milk to 

Little boy Arjuna and all the Listeners of the upanishads

The above sloka explained vocally in the following video