Mishkat al-Masabih 4531
Ibn ‘Abbas reported the Prophet as saying:
“The evil eye is genuine If anything could get ahead of the decree the evil eye would do so. And when you are asked to bathe do so.”*

Muslim transmitted it.

* An indication of the practice here intended will be found in the tradition of Abu Umama near the end of Section II of this chapter.
وَعَنِ ابْنِ عَبَّاسٍ عَنِ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ: «الْعَيْنُ حَقٌّ فَلَوْ كَانَ شَيْءٌ سَابَقَ الْقَدَرِ سَبَقَتْهُ الْعَيْنُ وَإِذَا اسْتُغْسِلْتُمْ فاغسِلوا» . رَوَاهُ مُسلم