"A man stood and praised one of the 'Amirs so Al-Miqdad bin Al-Aswad threw dust in his face and said: 'The Messenger of Allah ﷺ ordered us to throw dust in the faces of those who praise others.'" (Using translation from Tirmidhī 2393)
قَامَ رَجُلٌ فَأَثْنَى عَلَى أَمِيرٍ مِنَ الْأُمَرَاءِ فَجَعَلَ الْمِقْدَادُ يَحْثُو فِي وَجْهِهِ التُّرَابَ وَقَالَ أَمَرَنَا رَسُولُ اللهِ ﷺ أَنْ نَحْثُوَ فِي وُجُوهِ الْمَدَّاحِينَ التُّرَابَ