Sayyiduna Ibn Abbas (may Allah be pleased with them) narrates that the Noble Prophet (peace and blessings be upon him) said: The effect of the evil eye is true, the effect of the evil eye is true; it can even shake a mountain.
Hadith Referenceالفتح الربانی / كتاب الطب والرقي والعين والعدوى والتشاؤم والفال) / 7743