Sunan Abi Dawud 89
سنن أبي داود#89SahihNarrated 'Abd Allaah b. Muhammad:We were in the company of 'Aishah. When her food was brought in, al-Qasim stood up to say his prayer. Thereupon , 'Aishah said : I heard the Messenger of Allaah (sal Allaahu alayhi wa sallam) say: Prayer should not be offered in presence of meals, nor at the moment when one is struggling with two evils (e.g. when one is feeling the call of nature)
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Muhammad Muhyi Al-Din Abdul HamidSahih
Shuaib Al ArnautSahih
Zubair Ali ZaiSahih Muslim (560)
In-book reference: 1:89