CC Madhya 21.53
jagal-lakṣmī rākhi’ rahe yāhāṅ māyā dāsī
Because he wants to enjoy the material energy, the conditioned soul is allowed to reside in Devī-dhāma, the external energy, where goddess Durgā carries out the orders of the Supreme Lord as His maidservant. The material energy is called jagal-lakṣmī because she protects the bewildered conditioned souls. Goddess Durgā is therefore known as the material mother, and Lord Śiva, her husband, is known as the material father. Goddess Durgā is so named because this material world is like a big fort where the conditioned soul is placed under her care. For material facilities, the conditioned soul tries to please goddess Durgā, and mother Durgā supplies all kinds of material facilities. Because of this, the conditioned souls are allured and do not wish to leave the external energy. Consequently they are continuously making plans to live here peacefully and happily. Such is the material world.