عن أبي هريرة رضي الله عنه عن النبي صلى الله عليه وسلم قال: «لا تَرْغَبُوا عن آبائكم، فمن رغب عن أبيه، فهو كفر».
Disowning one's father willingly is forbidden. This practice is similar to an act of disbelief. Actually, it is not the kind of disbelief that takes one to Hell forever. Rather, it is minor disbelief.
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