It is the hypothetical source of/evidence for its existence is provided by: Sanskrit a-, an- "not;" Avestan na "not;" Greek a-, an-, ne- "not;" Latin in- "not," ne "that not;" Old Church Slavonic and Lithuanian ne "not;" Old Irish an-, ni, Cornish ny "not;" Gothic and Old English un- "not."
<a href="https://www.etymonline.com/word/ahimsa">Etymology of ahimsa by etymonline</a>
Harper, D. (n.d.). Etymology of ahimsa. Online Etymology Dictionary. Retrieved $(datetime), from https://www.etymonline.com/word/ahimsa