Hisn al-Muslim · Book 1 · Hadith 244
إِذَا رَأَى أَحَدُكُم مِنْ أَخِيهِ، أَوْ مِنْ نَفْسِهِ، أَوْ مِنْ مَالِهِ مَا يُعْجِبُهُ [فَلْيَدْعُ لَهُ بِالْبَرَكَةِ] فَإِنَّ الْعَيْنَ حَقٌّ
If you see something from your brother, yourself or wealth which you find impressing, then invoke blessings for it, for the evil eye is indeed true. Reference: Ahmad 4/447, Ibn Majah, Malik. Al-Albani graded it authent…