According to Harav Musafi Shelit"a (Q&A 74259) (and I'm sure earlier sources), if you do a "Hanhaga Tova - good deed" three times you need Hatarat Nedarim. I believe Harav Ovadia Shelit"a in his book Yechave Daas holds that this only applies for Hanhagot mentioned in the Shulhan Aruch. Can anyone provide the source in Yechave Daat where he says this?
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