Przysłów 30:17 Halacha: Chayyei Adam

Anyone who disgraces his father or mother, even with words, even by hint, is included in the curse from the Almighty, as it says "Cursed is one who degrades his father or mother." And regarding this, Solomon said through divine inspiration in Proverbs: "The eye that mocks a father and scorns obedience to a mother—the ravens of the valley will pluck it out." He said "obedience to [an aged] mother," meaning to teach that it is common for women's words to be foolish, and especially when she is old, her words are foolish. Therefore, even one who disgraces an aged mother—"obedience" refers to the gathering [of wrinkles], for due to old age wrinkles form in her flesh—even so, his punishment is severe. And it is written in Sefer HaChareidim: "There was an incident in our days of a man who supported his mother, but she was light and despised in his eyes because she had married another man after his father's death. This man traveled by sea and was killed and thrown into the sea. The Jews searched for him and found him on the seashore with one eye gouged out, pecked by the ravens."