I believe it’s a T’shuvah in the Tzitz Eliezer quoting I believe a Pri Megadim.
(I know the Tzitz Eliezer mentions it. I do not recall if his Maskanah is that he holds like it. Either he didn’t or I read the T’shuvah and was upset by the fact that he didn’t because the M”B calls it Korov Lebrachos Levatalos. But there are definite legitimate sources for it.)