رِيَاضُ الصَّالِحِينَ
Riyad as-Salihin 236
The Book of Miscellany
Reverence towards the Sanctity of the Muslims
وَعَنْ أَنَسٍ رَضِيَ اللَّهُ عَنْهُ صَلَّى اللَّه عَلَيْهِ وَسَلَّمَ قَالَ: لا يُؤْمِنُ أَحَدُكُمْ حَتَّى يُحِبَّ لأَخِيهِ مَا يُحِبُّ لِنَفْسِهِ ((مُتَّفَقٌ عَلَيْهِ)) .
Anas (May Allah bepleased with him) reported: The Prophet (ﷺ) said, "No one of you shall become a true believer until he desires for his brother what he desires for himself". [Al-Bukhari and Muslim].
Riyad as-Salihin, 236