A kind of Kālika Śruta (a category of Āgamas (2) (canonical works) which can be studied only in the first and last quarter of day and night); the Cūlā (appendix) of the Ācārāṅga (the first Aṅga (1) (principal canonical work)) or the Cūlā of the Dŗṣṭivāda (12th Aṅga (1)).
aṃgassa cūlitā jahā āyārassa paṃcacūlāto, diṭṭhivāyassa vā cūlā.(Nandī 78 Cū p. 59)