Tafsir of Al-Ma'idah 5:113

قالوا نريد أن نٲكل منها

They said: "We wish to eat thereof.'' we need to eat from it,

وتطمين قلوبنا

and to be stronger in faith, when we witness it descending from heaven as sustenance for us.

ونعلم أن قد صدقتنا

and to know that you have indeed told us the truth, of your Message and our faith in you increases and also our knowledge.

ونكون عليها من الشاهدين

and that we ourselves be its witnesses. testifying that it is a sign from Allah, as proof and evidence that you are a Prophet, and attesting to the truth of what you brought us