Al-Matalib al-'Aliyah 2126 — The reward of the judge when he strives

It is narrated from Sayyiduna Uqbah bin Amir (may Allah be pleased with him), who attributes it (marfu') to the Prophet (peace and blessings be upon him), and he mentioned the like of the hadith of Amr, except that in it the word "ujur" (rewards) is narrated in place of "hasanat" (good deeds).
The chain of this hadith is narrated by way of Faraj bin Fadalah from Rabi'ah bin Yazid.