It is narrated from Hazrat Amr bin Aas (may Allah be pleased with him) that he heard the Prophet (peace and blessings of Allah be upon him) say: When a ruler passes a judgment and strives with care and diligence and makes the correct decision, he will have a double reward. And if he makes a mistake despite his caution, he will still have a single reward. The previous hadith is also narrated through this second chain of transmission.