What is meant by "harm" (adha) in this āyah?

Imām Ibn al-Jawzī (d. 597/1201) summarized the scholars' opinions in his book "Zād al-Masīr" as follows:

1. It is to confront the poor person with words that hurt him, such as saying, "You are always poor, I have been burdened with you, and Allah has relieved me of you."
2. It is to inform others of one's kindness to the poor person, especially when the poor person dislikes having that known.