Muhammad ibn Zayd reported: Some people said to Ibn Umar, may Allah be pleased with him, “When we had an audience with a ruler, we would speak to them differently than what we said after we left them.” Ibn Umar said, “We used to consider that hypocrisy.”
Source: Ṣaḥīḥ al-Bukhārī 6756
Grade: Sahih (authentic) according to Al-Bukhari
عن مُحَمَّد بْن زَيْدٍ قَالَ أُنَاسٌ لِابْنِ عُمَرَ رضي الله عنه إِنَّا نَدْخُلُ عَلَى سُلْطَانِنَا فَنَقُولُ لَهُمْ خِلَافَ مَا نَتَكَلَّمُ إِذَا خَرَجْنَا مِنْ عِنْدِهِمْ قَالَ كُنَّا نَعُدُّهَا نِفَاقًا
6756 صحيح البخاري كتاب الأحكام باب ما يكره من ثناء السلطان وإذا خرج قال غير ذلك