So far as I know it's never mentioned in hinduism. Hinduism came with the indus valley civilization, way before than other religions. Thus, there were so many flaws which were eradicated with the progress of civilization. But, there are still places in India and Nepal where castism discriminates own society. Therefore, Christianity is becoming popular which believes in helping disadvantaged or poors. It always serve poor thru helping with education and other activities. The INGO like PeaceCorps is always in poverty stricken area to uplift the living standard. Today, the south indian state, Kerala, is the most literate state because of the active involvement of missionaries to eradicate social differences. 

SS