Premanand Maharaj Ji
What exactly is adharma, and how do I test whether my earning is adharma?
Adharma defined: harming, cheating, stealing
Whatever is earned by hurting any being, deceit, theft or violence is adharma, as is anything earned against the scriptures. A simple test: do not do to others what you would not want done to you.
Adharma is whatever is earned by hurting any living being, by deceit, fraud, theft or violence.