Manusmriti

siva.sh/manusmriti/11/141

किं चिदेव तु विप्राय दद्यादस्थिमतां वधे । अनस्थ्नां चैव हिंसायां प्राणायामेन शुध्यति ॥ १४१ ॥

sanskrit

But for killing (small) animals which have bones, he should give some trifle to a Brahmana; if he injures boneless (animals), he becomes pure by a suppressing his breath (pranayama).

english translation

kiM cideva tu viprAya dadyAdasthimatAM vadhe | anasthnAM caiva hiMsAyAM prANAyAmena zudhyati || 141 ||

hk transliteration by Sanscript