Analysis of information sources in references of the Wikipedia article "Nonkilling" in English language version.
Ahimsa is the ruling principle of Indian life from the very earliest times. ... This positive spiritual attitude is easily explained to the common man in a negative way as "ahimsa" and hence this way of denoting it. Tiruvalluvar speaks of this as "kollaamai" or "non-killing."
{{cite book}}
: CS1 maint: others (link)