Al-Husayn b. Ahmad b. Idris (ra) narrated to us. He said: My father narrated to us from Ja`far b. Muhammad b. Malik al-Kufi. He said: Muhammad b. Ahmad al-Mada’ini narrated to me from Fadl b. Kathir from `Ali b. Musa al-Rida (as). He said
Whoever meets a poor Muslim and greets him in a way that is different than the way he greets the rich, Allah will be angry when he meets Him on the Day of Resurrection.