Jami` at-Tirmidhi 622
جامع الترمذي#622Da'ifAbdullah bin Mas'ud narrated that :the Prophet said: "A Tabi or a Tabi'ah (is due) on thirty cows, and a Musinnah (is due) on every forty
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
Zubair Ali ZaiDaif
In-book reference: 7:6