Is it a sinful act of discrimination when parents favor one of their children over others in treatment and responsibilities, bearing heavily their burdens and expenses despite their shortcomings, and what is the ideal conduct regarding this situation?

Justice must be observed among children in gifts and expenditures. Preferring one child over others in treatment is not permissible and is a form of injustice. Children can advise their parents with gentleness and kindness, and they must show piety and honor their parents in all circumstances. The wife should encourage her husband to show piety towards his parents and overlook their shortcomings.