Mishkat al-Masabih #4110

Ibn ‘Abbas reported God’s messenger as saying, “When one of you eats food he should say, ‘O God, bless us in it and give us good nourishment from it', and when he is given a drink of milk he should say, ‘O God, bless us in it and prosper us from it’, for no food or drink satisfies like milk.” Tirmidhi and Abu Dawud transmitted it.