كتاب الشهادات عن رسول الله صلى الله عليه وسلم
35  
Chapters On Witnesses
(4)
Chapter: From it (i.e. the previous chapter subject) [Among That Lying Will Spread Until A Man Will Testify While His Testimony Was Not Requested And A Man Will Take An Oath While His Oath Was Not Sought]
(4)
باب مِنْهُ ‏
Jami` at-Tirmidhi 2303
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."
حَدِيثِ عُمَرَ بْنِ الْخَطَّابِ عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ ‏"‏ خَيْرُ النَّاسِ قَرْنِي ثُمَّ الَّذِينَ يَلُونَهُمْ ثُمَّ الَّذِينَ يَلُونَهُمْ ثُمَّ يَفْشُو الْكَذِبُ حَتَّى يَشْهَدَ الرَّجُلُ وَلاَ يُسْتَشْهَدُ وَيَحْلِفُ الرَّجُلُ وَلاَ يُسْتَحْلَفُ ‏"‏ ‏.‏ وَمَعْنَى حَدِيثِ النَّبِيِّ صلى الله عليه وسلم ‏"‏ خَيْرُ الشُّهَدَاءِ الَّذِي يَأْتِي بِشَهَادَتِهِ قَبْلَ أَنْ يُسْأَلَهَا ‏"‏ ‏.‏ هُوَ عِنْدَنَا إِذَا أُشْهِدَ الرَّجُلُ عَلَى الشَّىْءِ أَنْ يُؤَدِّيَ شَهَادَتَهُ وَلاَ يَمْتَنِعَ مِنَ الشَّهَادَةِ هَكَذَا وَجْهُ الْحَدِيثِ عِنْدَ بَعْضِ أَهْلِ الْعِلْمِ ‏.‏ كَمُلَ وَالْحَمْدُ لِلَّهِ كِتَابُ الشَّهَادَاتِ وَيَلِيهِ كِتَابُ الزُّهْدِ
Grade: Sahih (Darussalam)
Reference : Jami` at-Tirmidhi 2303
In-book reference : Book 35, Hadith 10
English translation : Vol. 4, Book 9, Hadith 2303