Jami` at-Tirmidhi Book 26, Hadith 19
From Anas: "The Prophet (ﷺ) prohibited that a man should drink while standing." (Qatadah said:) So it was said: "And eating ?" He (Anas) said: "That is worse."
This Hadith is Hasan Sahih.
"I heard Ibn Abi Laila narrating that Hudhaifah asked for water, so someone brought him a vessel made from silver. He threw it, and said: 'I have indeed forbade him, but he refused to stop! Indeed the Messenger of Allah (ﷺ) prohibited drinking from silver and gold vessels, and from wearing silk and Dibaj, and he (ﷺ) said: "If is for them in this world, and for you in the Hereafter."
He said: There are narrations on this topic from Umm Salamah, Al-Bara', and 'Aishah.
This Hadith is Hasan Sahih.
"We would eat during the time of the Messenger of Allah (ﷺ) while we were walking, and we would drink while we were standing."
This Hadith is Hasan Sahih Gharib as a narration of 'Ubaidullah bin 'Umar, from Nafi', from Ibn 'Umar. 'Imran bin Hudair reported this Hadith from Abu Al-Bazari, from Ibn 'Umar. Abu Al-Bazari's name is Yazid bin 'Utarid.