Jami` at-Tirmidhi 1814
جامع الترمذي#1814SahihNarrated Ibn 'Umar: "The Messenger of Allah (ﷺ) prohibited taking two dates at a time until seeking permission from one's companion." He said: There is something on this topic from Sa'd the freed slave of Abu Bakr. [Abu 'Eisa said:] This Hadith is Hasan Sahih
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: 25:28