Jami` at-Tirmidhi 786
جامع الترمذي#786Da'if(Another chain) from Umm Amarah bint Ka'b Al-Ansari:From the Prophet, that is similar, except that he did not mention "Until they finish, or they have eating their fill
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 ZaiIsnaad Hasan
In-book reference: 8:105