Zaid bin Khalid Al-Juhani narrated that the Messenger of Allah (s.a.w) said:"Shall l not inform you of the best of witnesses? The one who comes with his testimony before being asked for it

(Another chain) from Malik in which he said:Ibn Abi 'Amrah

Zaid bin Khalid Al-Juhani narrated that the Messenger of Allah(s.a.w) said:"The best of witnesses is the one who gives his testimony before being asked for it

Ayman bin Khuraim narrated that the Prophet (s.a.w) stood to give a Khutbah and said:"O you people False witness is tantamount to Shirk with Allah" Then the Messenger of Allah (s.a.w)recited: So shun the Rijs of the idols, and shun false speech

Khuraim bin Fatik Al-Asadi narrated that the Messenger of Allah (s.a.w) performed the Subh (Fajr)prayer. Then when he turned he got up to stand and said:"O you people! False witness is tantamount to Shirk with Allah."Saying it three times, then he recited this Ayah And shun false speech Until the end of the Ayah

Abdur-Rahman bin Abi Bakrah narrated from his father that the Messenger of Allah (s.a.w) said:"Shall I not inform you of the greatest of the major sins?" They said: "Of course O Messenger of Allah(s.a.w)!" He said: "Shirk with Allah disobeying parents, and false testimony." Or: "False speech" He said: "So the Messenger of Allah(s.a.w) would not stop saying it until we said ( to ourselves): 'I wish he would be quiet

Imran bin Husain narrated that the Messenger of Allah(s.a.w)said:"The best of people are my generation, then those who follow them,then those who follow them, then those who follow them."(He(s.a.w)said that) three times. "Then, after them a people will come who increase in fatness, loving fatness, giving testimony before they are asked for it

Another chain on the authority of 'Imran bin Husain narrates a similar narration

Clarification of this is in the Hadith of 'Umar bin Al-Khattab, from the Prophet(s.a.w) who said:"The best of people are my generation, then those who follow them,then those who follow them. Then lying will spread, until a man testifies while his testimony was not requested, and a man will take an oath while an oath was not sought