Jami` at-Tirmidhi 1920
جامع الترمذي#1920SahihAmr bin Shu'aib narrated that his father, from his grandfather, who said that the Messenger of Allah said:'He is not one of us who does not have mercy upon our young, nor knows the honor of our elders
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 ZaiHasan
In-book reference: 27:26