244
The Prophet ﷺ said:
إِذَا رَأَى أَحَدُكُمْ مِنْ أَخِيهِ، أَوْ مِنْ نَفْسِهِ، أَوْ مِنْ مَالِهِ مَا يُعْجِبُهُ، فَلْيُبَرِّكْهُ فَإِنَّ الْعَيْنَ حَقٌّ
Idha ra'a ahadukum min akhih, aw min nafsih, aw min malihi ma yu'jibuh, falyubarrikhu fa innal-'ayna haqq
When one of you sees in his brother, or in himself, or in his wealth something that pleases him, let him ask for blessing upon it, for the evil eye is real.
Source Musnad Aḥmad 15700 · Sunan Ibn Mājah 3509 (similar wording) Ṣaḥīḥ
Compiler cites Aḥmad 4/447; Ibn Mājah; Mālik; al-Albānī, Ṣaḥīḥ al-Jāmiʿ 1/212 (ṣaḥīḥ); see al-Arnaʾūṭ's edition of Zād al-Maʿād 4/170