Musannaf Ibn Abi Shaybah

It is narrated from Hazrat Talha bin Yahya that he said: I was sitting with Hazrat Umar bin Abdul Aziz when Hazrat Abdul A'la bin Hilal came to him and said: O Commander of the Faithful! May your remaining life be better for you. May Allah keep you alive. Hazrat Umar bin Abdul Aziz said: O Abu al-Nadr! That supplication has already been completed. But you should make this supplication: May Allah grant you a pure life and cause you to die among the righteous people.