The Obligation of a Son to Follow His Father's Customs
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Question
Hello. I wanted to ask if a son is obligated to follow his father's customs. I encountered this question in the following cases: a. Not carrying even in a place with a reliable eruv. b. Wearing an outer garment at the Shabbat meal. c. Not eating on Passover things that were not prepared at home, except for items made of a single ingredient, like cheese and eggs, etc. d. For washing hands, a complete washing of one hand. And if he is not obligated to observe, but has done so for a period because he was taught that he must observe all these things, and it is considered a real obligation. Does he need a release from vows? If possible, I would appreciate receiving sources for studying the law. Thank you.
Answer
Hello,
Practices that a son observed due to his father's customs are not obligatory as a vow unless he observed them for a whole year after his marriage.
[The matters you mentioned are customs, except for the first issue [prohibiting carrying in a reliable eruv], which has halachic significance according to the opinion of many early authorities].
Source
See Pischei Teshuva YD 214, and also Pri Chadash Siman 496
Regarding eruv - see Biur Halacha Siman 364