مُسْنَدُ أَحْمَدَ
Musnad Ahmad 2465
Musnad of 'Abdullah bin al-'Abbas bin 'Abdul-Muttalib from the Prophet
It was narrated from Ibn 'Abbas (رضي الله عنه) that the Prophet (ﷺ) said: "The (evil) eye is real and could cause the destruction of a mountain.”
Musnad Ahmad 2477His saying "Al-ain Haqqun" is saheeh and the remaining part