Reference: Siyar A’laam an-Nubalaa – Volume 8, Page 421
‘Abdus-Samad ibn Yazeed said he heard al-Fudhayl ibn ‘Iyaadh say:
If I had a [single] supplication which was [certain] to be answered [by Allaah], I would make it for the ruler; for the wellbeing and righteousness of the ruler entails the wellbeing of the land and the people.
