I read in the Torah that the blessing of food consists in ablution before it. So I mentioned it to the Prophet (ﷺ). He said: The blessing of food consists in ablution before it and ablution after it.

Sufyan disapproved of performing ablution before taking food.

Abu Dawud said: It is weak.
Sunan Abi Dawud Book 28, Hadith 26
← Previous Hadith The Messenger of Allah (ﷺ) came out from the privy and was presented to him. They (the people) asked: Should we bring you water for ablution? He replied: I have been commanded to perform ablution when I get up for prayer.

Sunan Abi Dawud Book 28, Hadith 25 Next Hadith → The Messenger of Allah (ﷺ) came out from the valley of a mountain where he had eased himself. There were some dried dates on a shield before us. We called him and he ate with us. He did not touch water.

Sunan Abi Dawud Book 28, Hadith 27