2748Jamiat TirmidhiSahih (Darussalam)حَدَّثَنَا قُتَيْبَةُ، عَنْ مَالِكِ بْنِ أَنَسٍ، عَنْ عَبْدِ اللَّهِ بْنِ دِينَارٍ، عَنِ ابْنِ عُمَرَ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ أَيُّمَا رَجُلٍ قَالَ لأَخِيهِ كَافِرٌ فَقَدْ بَاءَ بِهِ أَحَدُهُمَا " هَذَا حَدِيثٌ حَسَنٌ صَحِيحٌ غَرِيبٌ وَمَعْنَى قَوْلِهِ بَاءَ يَعْنِي أَقَرَّ Narrated Ibn 'Umar:Ibn 'Umar narrated that the Prophet (ﷺ) said: "Whoever says to his brother 'disbeliever' then it will have settled upon one of them." SahihReference: Jami` at-Tirmidhi 2637 In-book : Book 40, Hadith 32 English translation : Vol. 5, Book 38, Hadith 2637