A kind of Asvādhyāyika (time and place in which Svādhyāya (scriptural studies and teaching) is prohibited));
the place in which there are (such foul or filthy objects like) bones, meat etc. in vicinity and the time in which there takes place an eclipse of moon etc. are prohibited for undertaking Svādhyāya.
dasavidhe orālie asajjhāie paṇṇatte, taṃ jahāṭṭhi, maṃse, soṇite, asuisāmaṃte, susāṇasāmaṃte, caṃdovarāe, sūrovarāe, paḍaṇe, rāyavnggahe, uvassayassa aṃto orālie sarīrage.
(Sthā 10.21)