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Phrase(s): Do as I say, not as I do.
Prov. Take my advice, even though I am acting contrary to it. (Sometimes used as an apology for behaving hypocritically.) • Jill: Why are you walking on the grass when I told you not to? Jane: But you’re walking on the grass. Jill: Do as I say, not as I do.
McGrawhill's American Idioms And Phrasal Verbs