Srimad Bhagavatam Canto 08, Chapter 16, Text 32

SB 8.16.32

namah sivaya rudraya
 namah sakti-dharaya ca
sarva-vidyadhipataye
 bhutanam pataye namah
 
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
I offer my respectful obeisances unto You, Lord Siva, or Rudra, who are the reservoir of all potencies, the reservoir of all knowledge, and the master of everyone.
 
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
It is the system for one to offer obeisances unto the expansion or incarnation of the Lord. Lord Siva is the incarnation of ignorance, one of the material modes of nature.
Srimad Bhagavatam Canto 08, Chapter 16, Text 31
Srimad Bhagavatam Canto 08, Chapter 16, Text 33