A Gurdas Mann song has this chorus line -
Roti Haq di khaiye ji, paanve boot polishaan kariye
What does haq di roti mean?
Haq means right.
Haq di roti means livelihood earned through honest means, to which one has legitimate right.
Halaal and haraam are two words that are also extensively used in North Indian conversations.
Halaal ka paisa is money earned through honest means, by doing hard work. On this money, one has Haq.
Haraam means earning through dishonest means, by doing wrong things.
One of the things that we heard often at home, from everyone was:
The money earned through someone's tears is only spent on the hospital and the crematorium.
This means that if someone does manage to amass a lot of wealth by unfair means, that wealth will not bring happiness to the acquirer. Karma will find a way, such that the money will be spent on illness and death. This means that either the person, or their family, will suffer ill health that has recurrent costs.
Over the years, I have found this saying come true sometimes and not so much at other times.
But the advice does exist and is given as a warning to growing children, so they may be inspired to earn their money through honest means.