Yahya bin Sa'id al-Ansari يحيى بن سعيد الأنصاري · The Book of the Sunnah

"I said to Zubair bin Awwam: 'Why do I not hear you narrating Ahadith from the Messenger of Allah (ﷺ) as I hear Ibn Mas'ud and so-and-so and so-and-so?' He said: 'I never left him from the time I became Muslim, but I heard him say a word: 'Whoever tells a lie about me deliberately, let him take his place in Hell."

"Faith increases and decreases."