It is narrated from Hazrat Aisha (may Allah be pleased with her) that once two men came to the Prophet (peace and blessings be upon him). The Prophet (peace and blessings be upon him) spoke to them harshly with displeasure. I said, "O Messenger of Allah! Whoever has received goodness from you, but these two have not received goodness." The Prophet (peace and blessings be upon him) said, "Do you not know that I have made a covenant with my Lord that if I curse or reproach any believer, then He will make those words a means of forgiveness, well-being, etc. for him."