Hadith 1740

Abu Hurairah (May Allah be pleased with him) said: The Messenger of Allah (PBUH) said, "None of you should use the word Al-Karm for grapes, for Al-Karm is a Muslim (worthy of respect)."

[Al- Bukhari and Muslim]

Another narration is: "Verily, Al-Karm is the heart of a true believer."

Another narration is: "People have named grapes as Al-Karm; verily, only the heart of a believer is Al-Karm."