(28) باب الرَّجُلِ عِنْدَهُ الشَّهَادَةُ لاَ يَعْلَمُ بِهَا صَاحِبُهَا
Zaid bin Khalid Al-Juhani said that he heard the Messenger of Allah (ﷺ) say:
"The best of witnesses is the one who gives his testimony before he is asked for it." (JA)
Reference (JA): Sunan Ibn Majah 2364 (JA)
In-book reference (JA): Book 13, Hadith 57 (JA)
English translation (JA): Vol. 3, Book 13, Hadith 2364 (JA)