Allah's Messenger (ﷺ) said: "He who has been appointed a Qadi (judge) has been slaughtered without a knife."[Reported by Ahmad and al-Arba'a. Ibn Khuzaimah and Ibn Hibban graded it Sahih (authentic)].

Allah's Messenger (ﷺ) said: "When two men bring a case before you, do not decide in favor of the first till you hear what the other has to say, then you will know how to judge." 'Ali (RA) said: "Since then, I have continued to judge (in accordance with that)."[Reported by Ahmad, Abu Dawud and at-Tirmidhi. The latter graded it Hasan (good), while Ibn al-Madini graded it Qawi (strong), and Ibn Hibban graded it Sahih (authentic).]

Allah's Messenger (ﷺ) said: "Verily! The best of you (i.e. Muslims) are my generation, then their immediate followers, then their immediate followers. After them there will be people who will give (false) testimony without being asked (to testify), who will be treacherous and are not to be trusted, who will make vows and will not fulfill them, among whom obesity will appear."[Agreed upon].

The Prophet (ﷺ) considered Shahadah az-Zur (giving false testimony) among the most serious of major sins.[al-Bukhari and Muslim reported it in a long Hadith].

Allah's Messenger (ﷺ) said. "If anyone seized - by his oath - what rightly belongs to a Muslim, Allah has made the Hell-fire compulsory for him and forbidden for him the Paradise." A man asked, "O Allah's Messenger, even if it were something insignificant?" He replied, "Even if it were a stick from an Arak tree."[Reported by Muslim].

Two men disputed about a she-camel. Then, each of them said: this she-camel was born at my place, and each of them brought a proof (that it was his animal). Allah's Messenger (ﷺ) then ruled that it be taken by the one who had it in his possession.

He heard Allah's Messenger (ﷺ) say, "When a judge gives a ruling, having tried his best to decide correctly, and is right (in his decision), he will have a double reward; and when he gives a ruling having tried his best to decide correctly, and is wrong (in his decision), he will have a single reward."[Agreed upon].

It has a Shahid (supporting narration) reported by al-Hakim from the Hadith of Ibn 'Abbas.

Allah's Messenger (ﷺ) cursed the one who bribes and the one who takes bribes to influence the judgement.[Reported by Ahmad and al-Arba'a. at-Tirmidhi graded it Hasan (good), and Ibn Hibban graded it Sahih (authentic).

It has a Shahid (supporting narration) from 'Abdullah bin 'Amr's Hadith, reported by al-Arba'a except an-Nasa'i].

Allah's Messenger (ﷺ) ruled that the two opposing parties in a dispute should sit in front of the judge.[Reported by Abu Dawud. al-Hakim graded it Sahih (authentic)].

The Prophet (ﷺ) said: "Shall I not inform you who is the best witness? He is the one who produces his testimony before he is asked for it."[Reported by Muslim].

He addressed the people and said, "People were sometimes judged by the revealing of a Divine Revelation during the lifetime of Allah's Messenger (ﷺ), but now the Divine Revelation has been discontinued [i.e. there is no longer any new revelation coming]. Now we judge you by the deeds you practice publicly."[Reported by al-Bukhari].

Something similar to the aforesaid Hadith.[Abu Dawud and at-Tirmidhi reported it. Ibn Hibban graded it Sahih (authentic)].

The Prophet (ﷺ) said: "If people were given whatever they claimed (in disputes), some people would claim the lives and wealth of others; but the oath (of denial) must be taken by the defendant."[Agreed upon]. al-Baihaqi has reported with a Sahih (authentic) chain of narrators: "But the proof (Bayyinah) lies on the one who is making the claim, and the other (Yamin) must be taken by the one who rejects the claim."

Allah's Messenger (ﷺ) said: "If anyone swears a firm oath - knowingly, intentionally, taking by it property belonging to a Muslim, Allah will be angry with him when he meets Him (on the Day of Resurrection)."[Agreed upon].

Two men had a disputer over an animal, and neither of them had a proof. So Allah's Messenger (ﷺ) gave a ruling that it be divided in halves between them.[Reported by Ahmad, Abu Dawud and an-Nasa'i, and the wording is his (an-Nasa'i) who said that it's chain of narrators is Jayyid (good)].

The Prophet (ﷺ) said: "If anyone swears a false oath on this Minbar of mine, he will have prepared his seat in the Hell-Fire."[Reported by Ahmad, Abu Dawud and an-Nasa'i. Ibn Hibban graded it Sahih (authentic)].

I heard Allah's Messenger (SAW0 saying, "How could an Ummah (people) be purified (of its sins) where the right of its weak is not taken from its strong."[Reported by Ibn Hibban].

It has a Shahid (supporting narration) from the Hadith of Buraida, reported by al-Bazzar.