Narrated Zaid bin Khaled al-Juhani (RA): The Prophet ( صلی اللہ علیہ وسلم ) 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] .

Narrated 'Imran bin Husain (RA): Allah's Messenger ( صلی اللہ علیہ وسلم ) 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] .

Narrated 'Abdullah bin 'Umar (RA): Allah's Messenger ( صلی اللہ علیہ وسلم ) said: "It is not permissible to accept the testimony of a man or a woman who does not fulfill their trusts, or of one who harbors a grudge against his brother, or the testimony of one who is dependent on a family (to testify) for members of the family." [Reported by Ahmad and Abu Dawud] .

Narrated Abu Hurairah (RA): He heard Allah's Messenger ( صلی اللہ علیہ وسلم ) say. "The testimony of a bedouin against a city dweller is not permissible." [Reported by Abu Dawud and Ibn Majah] .

Narrated 'Umar bin al-Khattab (RA): He addressed the people and said, "People were sometimes judged by the revealing of a Divine Revelation during the lifetime of Allah's Messenger ( صلی اللہ علیہ وسلم ), 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] .

Narrated Abu Bakra (RA): The Prophet ( صلی اللہ علیہ وسلم ) considered Shahadah az-Zur (giving false testimony) among the most serious of major sins. [al-Bukhari and Muslim reported it in a long Hadith] .

Narrated Ibn 'Abbas (RA): The Prophet ( صلی اللہ علیہ وسلم ) said to a man, "Do you see the sun?" He replied, "Yes." He said, "Give witness in a similar case [which is as clear as the sun] , or leave it." [Ibn 'Adi reported it with a Da'if (weak) chain or narrators, and al-Hakim graded it Sahih (authentic), but he was mistaken] .

Narrated Ibn 'Abbas (RA): Allah's Messenger ( صلی اللہ علیہ وسلم ) ruled on the basis of an oath and a single witness. [Muslim, Abu Dawud and an-Nasa'i reported it, the latter said that it has a Jayyid (good) chain or narrators] .

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