Answer:
He had just bought a gift for her hair.
Step-by-step explanation:
In "The Gift of the Magi," Jim is shocked to learn that Della has decided to cut her hair. This is because he had just bought her a set of combs that he thought were perfect for her long hair. However, although he is surprised, he does not seem upset, and they are both reassured by the fact that her hair will grow again soon.