Jami` at-Tirmidhi 2279
جامع الترمذي#2279SahihWaki' bin 'Udus narrated from Abu Razin that the Prophet (s.a.w) said:" The Muslim's dreams are a portion of the forty-six portions of Prophet-hood. And it is (as if it is) on the leg of a bird, as long as it is not spoken of. But when it is spoken of it falls
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 ZaiIsnaad Hasan
In-book reference: 34:10