The purusa who gives birth to these material varieties is Lord Siva, and the prakrti which gives birth to these varieties, that is Durga. Therefore the original prakrti and purusa is represented by siva-linga and devi pot. Those who are worshiper of siva-linga, they know the devi pot and the siva-linga, they are worshiped. The original father, Krsna, says, aham bija-pradah pita: “I am the seed-giving father.” Sarva-yonisu kaunteya sambhavanti murtayo yah [Bg 14.4]. There are varieties of forms of life. How they are being begotten? Krsna says, aham bija-pradah pita. That pita, father, is Lord Siva. When Krsna comes in touch with prakrti for giving birth of these varieties of forms of life, that is Siva.

Srila Prabhupada, Talk on Srimad-Bhagavatam 3.26.17 – December 26, 1974, Bombay