"There is one passage, however, which apparently endorses a pre-Islamic Arab custom. This is the sentence at the end of verse 38 permitting a husband to beat his wife: "And those women whose insubordination you fear, admonish them, then leave them alone in the beds, then beat them!" … Abu Bakr's daughter Asma, who was the fourth wife of Zobayr b. ol-Awwam (one of the Prophet's first ten converts and principal companions), is reported to have said, "Whenever Zobayr was angry with one of us, he used to beat her until the stick broke.""
January 1, 1970
https://en.wikiquote.org/wiki/Marriage_in_Islam