1 Samuel 1:22-24

22But Hannah did not go up, for she said to her husband, "As soon as the child is weaned, I will bring him, so that he may appear in the presence of the Lord and dwell there forever."

23Elkanah her husband said to her, "Do what seems best to you; wait until you have weaned him; only, may the Lord establish his word." So the woman remained and nursed her son until she weaned him.

24And when she had weaned him, she took him up with her, along with a three-year-old bull, an ephah of flour, and a skin of wine, and she brought him to the house of the Lord at Shiloh. And the child was young.