Hadith 14:184
Abu Bakr narrated to us, he said: Ahmad ibn Ishaq narrated to us, he said: Wuhayb narrated to us, from Ibn Tawus, from his father, from Ibn Abbas, he said: The Messenger of Allah (may Allah bless him and grant him peace) said: "The evil eye is a reality. And if one of you is asked to wash [for the sake of another], then let him wash."
حدثنا أبو بكر قال حدثنا أحمد بن إسحاق قال حدثنا وهيب عن بن طاوس عن أبيه عن بن عباس قال قال رسول الله صلى الله عليه وسلم العين حق وإذا استغسل أحدكم فليغتسل