عَنْ بُرَيْدَةَ الْأَسْلَمِيِّ رَضِيَ اللَّهُ عَنْهُ أَنَّ نَبِيَّ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ قَالَ لَا تَقُولُوا لِلْمُنَافِقِ سَيِّدَنَا فَإِنَّهُ إِنْ يَكُ سَيِّدَكُمْ فَقَدْ أَسْخَطْتُمْ رَبَّكُمْ عَزَّ وَجَلَّ
It is narrated from Sayyiduna Buraidah Aslami (may Allah be pleased with him) that the Prophet of Allah (peace and blessings be upon him) said: Do not call a hypocrite your leader, because if he becomes your leader, you will anger your Lord.