It was narrated from Abdur-Rahman bin Abu Bakrah that his father said:
"A man praised another man in the presence of Messenger of Allah(ﷺ). The Messenger of Allah(ﷺ) said: 'Woe to you,you have cut the neck of your companion,'several times. Then he said: 'If anyone of you praises his brother, let him say: "I think he is lie this, but I do not sanctify anyone before Allah."
حَدَّثَنَا أَبُو بَكْرٍ، حَدَّثَنَا شَبَابَةُ، حَدَّثَنَا شُعْبَةُ، عَنْ خَالِدٍ الْحَذَّاءِ، عَنْ عَبْدِ الرَّحْمَنِ بْنِ أَبِي بَكْرَةَ، عَنْ أَبِيهِ، قَالَ مَدَحَ رَجُلٌ رَجُلاً عِنْدَ رَسُولِ اللَّهِ ـ صلى الله عليه وسلم ـ فَقَالَ رَسُولُ اللَّهِ ـ صلى الله عليه وسلم ـ " وَيْحَكَ قَطَعْتَ عُنُقَ صَاحِبِكَ " . مِرَارًا ثُمَّ قَالَ " إِنْ كَانَ أَحَدُكُمْ مَادِحًا أَخَاهُ فَلْيَقُلْ أَحْسِبُهُ وَلاَ أُزَكِّي عَلَى اللَّهِ أَحَدًا " .
