A kind of Bāhya Tapa (external austerities or Nirjara (shedding Kama));
the external penance in the form of curtailment in consumption of food, drink, cloth, utensils etc., and also attenuation of passions.
sā duvihā- davve bhāve ya. davve uvakaraṇe bhattapāṇe ya... bhāvomoyariyā cauṇhaṃ kasāyā-ṇaṃ.
(DaACū p.13)