1 Samuel 1:22-24

22But Hannah did not go up, for she said to her husband, “I will not go up until the child is weaned; and then I will bring him, so that he may appear before the Lord and remain there as long as he lives.”

23Elkanah her husband said to her, “Do what seems best to you. Wait until you have weaned him; only may the Lord establish and confirm His word.” So the woman remained [behind] and nursed her son until she weaned him.

24Now when she had weaned him, she took him up with her, along with a three-year-old bull, an ephah of flour, and a leather bottle of wine [to pour over the burnt offering for a sweet fragrance], and she brought Samuel to the Lord’s house in Shiloh, although the child was young.