Jami` at-Tirmidhi 2277
جامع الترمذي#2277SahihAbu Qatadah narrated that the Messenger of Allah (s.a.w) said:"Dreams are from Allah and Hulum are from Shaitan. So when one of you sees something that bothers him, then let him spit on his left three times, and let him seek refuge in Allah from its evil. Then it will not harm him
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Ahmad Muhammad ShakirSahih
Al-AlbaniSahih
Bashar Awad MaaroufHasan Sahih
Zubair Ali ZaiSahih - Agreed Upon
In-book reference: 34:8