One must have a proper way of supporting oneself. A householder must have some occupation. One manages to get food and clothing for one's needs from some place or the other. Am I doing anything that is encouraging people to live an immoral life. If so, such a livelihood should be given up.
Someone sells weapons, guns and bullets and yet thinks that one is very saintly.
That livelihood is a wrong one, one that is hindering people from leading a life of good conduct. Such a livelihood is helping them in breaking their sila . Such an occupation is a wrong occupation. Someone says that he does not kill any animal. But he rears cattle, sheep and goats, feeds them well so that they are fattened and sells them to the butcher.