(9) باب لاَ يَشْهَدُ عَلَى شَهَادَةِ جَوْرٍ إِذَا أُشْهِدَ
Narrated Zahdam bin Mudrab:
I heard `Imran bin Husain saying, "The Prophet (ﷺ) said, 'The best people are those living in my generation, then those coming after them, and then those coming after (the second generation)." `Imran said "I do not know whether the Prophet (ﷺ) mentioned two or three generations after your present generation. The Prophet (ﷺ) added, 'There will be some people after you, who will be dishonest and will not be trustworthy and will give witness (evidences) without being asked to give witness, and will vow but will not fulfill their vows, and obesity will appear among them."
Reference: Sahih al-Bukhari 2651
In-book reference: Book 52, Hadith 15
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 3, Book 48, Hadith 819