Is a mother's prayer against her child, even if the child is an infant and she does not intend to harm him, answered, such as when she says to him in anger: "May your house be ruined," "May Allah curse you," "Go to hell," and other similar phrases?

The Prophet, peace and blessings be upon him, forbade supplicating against oneself and one's children, lest it coincide with a time of answered prayers and Allah responds to it. The mother is commanded to supplicate for her child with good, because her supplication is answered, and she should accustom her tongue to good words.