The one who harms others will be harmed by Allah سبحانه وتعالىٰ , the one who makes difficulty for others then Allah سبحانه وتعالىٰ will make things difficult for him. The one who shows no mercy and does not forgive, will not be shown mercy nor forgivness. The pauper is the one who abuses the rights of others yet comes to the Last Day with a mountain of deeds which are then given to others and receives the misdeeds from others. The one who serves others is the Ameer and cannot be outrun except by the martyr.