mukhyÄ nÄma purastÄd dvÄs
tayÄpaṇa-bahÅ«danau
viá¹£ayau yÄti pura-rÄá¸
rasajña-vipaṇÄnvitaḥ
mukhyÄ - the chief; nÄma - called; purastÄt - on the eastern side; dvÄḥ - gate; tayÄ - by that; Äpaṇa - of the name Ä€paṇa; bahÅ«danau - of the name BahÅ«dana; viá¹£ayau - two places; yÄti - used to go; pura-rÄá¹ - the King of the city (Purañjana); rasa-jña - of the name Rasajña; vipaṇa - of the name Vipaṇa; anvitaḥ - along with.
The mouth is here described as the chief or the most important gate. The mouth is a very important entrance because one has two functions to conduct with the mouth. One function is eating, and the other is speaking. Our eating is done with the friend Rasajña, the tongue, which can taste so many different types of foods. The tongue is also used for speaking, and it can speak of either material sense enjoyment or Vedic knowledge. Of course, here material sense enjoyment is stressed. Therefore the word rasajña is used.