Narrated Muhammad bin Zaid bin `Abdullah bin `Umar:
Some people said to Ibn `Umar, "When we enter upon our ruler(s) we say in their praise what is contrary to what we say when we leave them." Ibn `Umar said, "We used to consider this as hypocrisy."
Reference: Sahih al-Bukhari 7178 In-book : Book 93, Hadith 41 USC-MSA web (English) : Vol. 9, Book 89, Hadith 289 (deprecated)
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