ENOfficial
It was narrated that Qatadah said: "I heard Anas say: 'The Messenger of Allah (ﷺ) said (Humaid bin Mas'dah said in his Hadith: 'The Prophet (ﷺ) of Allah said): None of you has believed until he loves for his brother what he loves for himself.'"
Source: sunnah.com
Other translations
Arabic
أَخْبَرَنَا إِسْحَقُ بْنُ إِبْرَاهِيمَ قَالَ حَدَّثَنَا النَّضْرُ قَالَ حَدَّثَنَا شُعْبَةُ ح وَأَنْبَأَنَا حُمَيْدُ بْنُ مَسْعَدَةَ قَالَ حَدَّثَنَا بِشْرٌ قَالَ حَدَّثَنَا شُعْبَةُ عَنْ قَتَادَةَ قَالَ سَمِعْتُ أَنَسًا يَقُولُ قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ وَقَالَ حُمَيْدُ بْنُ مَسْعَدَةَ فِي حَدِيثِهِ إِنَّ نَبِيَّ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ لَا يُؤْمِنُ أَحَدُكُمْ حَتَّى يُحِبَّ لِأَخِيهِ مَا يُحِبُّ لِنَفْسِهِ
sunnah.com