Jami` at-Tirmidhi 984
جامع الترمذي#984Da'ifAbdullah narrated that:The Prophet said: "Beware of An-Na'i, for indeed announcing one's death is from the deeds of Jahliyyah
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Ahmad Muhammad ShakirDaif
Al-AlbaniDaif
Zubair Ali ZaiDaif
In-book reference: 10:20