What is the ruling on forgetting to cut one's hair and remembering it the following day, then cutting it after 'Umrah, in addition to having intercourse with one's wife in the Haram after completing 'Umrah?

Shortening the hair on the second day is sufficient and achieves the 'tahallul' (release from the state of ihram) for Umrah. However, if the husband has intercourse with his wife before shaving or shortening the hair, the wife must offer a sacrifice of a sheep to be slaughtered and distributed among the poor of the Haram, or fast for ten days if she cannot find a sheep.