In the Name of Allah , the Compassionate , the Merciful
Imam Ridha [a] narrated from his father [a] from Imam Amir ul Mu'mineen [a] who said that a man once asked the Prophet [s] to teach him an action to prevent a barrier between him and Paradise.
The Holy Prophet [s] said: "Do not get angry; do not ask people for things; wish for people whatever you wish for yourself."
Bihar-ul-Anwar, vol. 75, p. 27