Al-Adab Al-Mufrad, Book 33, Hadith 7 (In-Book) ⓘ
'Abdullah ibn Burayda reported from his father that the Messenger of Allah, may Allah bless him and grant him peace, said, "Do not call a hypocrite 'master'. He is not your master and you will have angered your Lord, the Mighty and Exalted."
حَدَّثَنَا عَلِيُّ بْنُ عَبْدِ اللهِ، قَالَ: حَدَّثَنَا مُعَاذُ بْنُ هِشَامٍ قَالَ: حَدَّثَنِي أَبِي، عَنْ قَتَادَةَ، عَنْ عَبْدِ اللهِ بْنِ بُرَيْدَةَ، عَنْ أَبِيهِ قَالَ: قَالَ رَسُولُ اللهِ صلى الله عليه وسلم: لاَ تَقُولُوا لِلْمُنَافِقِ: سَيِّدٌ، فَإِنَّهُ إِنْ يَكُ سَيِّدَكُمْ فَقَدْ أَسْخَطْتُمْ رَبَّكُمْ عَزَّ وَجَلَّ.
also referenced under: Hadith 760 (Reference) & Book 33, Hadith 760 (English)