The four types of brahmacarya –sāvitra, prājāpatya, brāhmana and bṛhat arose from Brahmā’s four mouths. The four occupations of the householder—vārtā, saṣcaya, śālīna and śiloṣcha arose from his four mouths. After taking the sacred thread, remaining celibate for three nights is called sāvitra. Remaining celibate for a year is called prājāpatya. Remaining celibate until learning the Vedas is called brāhma. Brhāt means celibacy till death. Vārtā refers to occupations not forbidden such a s agriculture. Saṣcaya means performing sacrifices. Śālīna means taking alms without begging. Śiloṣchana means taking the fallen grains in the field. Śila and uṣccha are combined a dvandva in the singular as in the phrase ukāla jjhrasva-hīrgha-plutaḥ (Pāninī 1.2.27). They are combined together with the same meaning. These are the four types of occupation for the householder (gṛhe).