Sahih Muslim 2247
Sahih Muslim · Book 40: The Book Concerning the Use of Correct Words · It Is Disliked To Call Grapes Karm
Abu Huraira reported from Allah's Messenger (ﷺ) various ahadith, one of which is this that he said:
وَحَدَّثَنَا ابْنُ رَافِعٍ ، حَدَّثَنَا عَبْدُ الرَّزَّاقِ ، أَخْبَرَنَا مَعْمَرٌ ، عَنْ هَمَّامِ بْنِ مُنَبِّهٍ ، قَالَ هَذَا مَا حَدَّثَنَا أَبُو هُرَيْرَةَ ، عَنْ رَسُولِ اللَّهِ صلى الله عليه وسلم . فَذَكَرَ أَحَادِيثَ مِنْهَا وَقَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " لاَ يَقُولَنَّ أَحَدُكُمْ لِلْعِنَبِ الْكَرْمَ . إِنَّمَا الْكَرْمُ الرَّجُلُ الْمُسْلِمُ " .
None of you should use the word al-karm for 'Inab, for karm (worthy of respect) is a Muslim person.