Reference: Reported by Ahmad, al-Haakim and Ibn Abee ‘Aasim in as-Sunnah No.226. Declared saheeh by Shaykh al-Albaanee in Saheehul-Jaami’ No.5023
Sharhus-Sunnah – Imaam al-Barbahaaree
Imaam al-Barbahaaree (rahima-hullaah) mentions:
I will not say anything good or bad about a person until I see how he ends, after something I heard from the Prophet (sal-Allaahu ‘alayhi wa sallam).
It was said: What did you hear?
He said: I heard the Messenger of Allaah (sal-Allaahu ‘alayhi wa sallam) say:
«The heart of the son of Aadam is agitated more severely than the cooking pot when it boils.»