On the issue of those who cheat in measures: If someone says, “I work and am sincere, while others do not work, yet they are the ones who receive the reward and I am not given it,” is it permissible for one to not be sincere?

The questioner : On the issue of those who cheat in measures: If someone says, “O Shaykh, I mean, I work and am sincere, while others do not work, yet they are the ones who take the reward and I am wronged in my right,” is I sinful if I do not be sincere?

The Shaykh : If you do not be sincere, you are a deceiver. And the Prophet (peace and blessings be upon him) said: And if the people perish, do not perish, yes, that is right.