Abu Ma'mar reported that a person lauded a ruler amongst the rulers and Miqdad began to throw dust upon him and he said:Allah's Messenger (ﷺ) commanded us that we should throw dust upon the faces of those who shower too much praise

Hammam b. al-Harith reported that a person began to praise 'Uthman and Miqdad sat upon his knee; and he was a bulky person and began to throw pebbles upon his (flatterer's) face. Thereupon 'Uthman said:What is the matter with you? And he said: Verily, Allah's Messenger (ﷺ) said: When you see those who shower (undue) praise (upon others), throw dust upon their faces

This hadith has been narrated on the authority of Miqdad through another chain of transmitters