I offer my (Kasyapa Muni) 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

Expressions researched:
"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"

SB Canto 8

I offer my respectful obeisances unto You, Lord Śiva, or Rudra, who are the reservoir of all potencies, the reservoir of all knowledge, and the master of everyone.

SB 8.16.32, Translation and Purport:

I offer my respectful obeisances unto You, Lord Śiva, or Rudra, who are the reservoir of all potencies, the reservoir of all knowledge, and the master of everyone.

It is the system for one to offer obeisances unto the expansion or incarnation of the Lord. Lord Śiva is the incarnation of ignorance, one of the material modes of nature.