The Book Concerning the Use of Correct Words
40/2. Chapter:
It Is Disliked To Call Grapes Karm
Sahih Muslim
حَدَّثَنَا زُهَيْرُ بْنُ حَرْبٍ، حَدَّثَنَا عَلِيُّ بْنُ حَفْصٍ، حَدَّثَنَا وَرْقَاءُ، عَنْ أَبِي الزِّنَادِ، عَنِ الأَعْرَجِ، عَنْ أَبِي هُرَيْرَةَ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " لاَ يَقُولَنَّ أَحَدُكُمُ الْكَرْمُ . فَإِنَّمَا الْكَرْمُ قَلْبُ الْمُؤْمِنِ " .
Abu Huraira reported Allah's Messenger (ﷺ) as saying: None of you should use the word al-harin (for grape) for the heart of a believer is karm (worthy of respect).
Reference : Sahih Muslim 2247dIn-book reference : Book 40, Hadith 9USC-MSA web (English) reference : Book 27, Hadith 5588