(The) fire (god) is the guru of the three social categories viz the brahmans, the kshatriya the warrior class, the vaishya the trader or (merchant class), the brahman is the guru of all the social categories except his own. The guru of woman is her husband and the guest is guru of all the inmates of the house. [The guru also means the most respectable person besides being the teacher or mentor or perceptor.]
