Śiva is knowledge, and knowledge is the satguru. Thus the same result is obtained by worshiping Śiva, knowledge and the guru. The guru is the abode of all divine beings and all mantras. Hence man should bow down and obey the instructions of the guru with all humility.§
Chandrajñāna Āgama, Kriyāpāda, 2.9. BO CJ, P. 12 §