Musannaf Ibn Abi Shaybah 27952 — A man praising another man

Ata bin Abi Rabah said: A man was praising another man in the presence of Sayyiduna Ibn Umar (may Allah be pleased with them both). So Sayyiduna Ibn Umar (may Allah be pleased with them both) began throwing dust at his face with his fingers, and he said that the Messenger of Allah (peace and blessings be upon him) said: "When you see those who praise, throw dust into their mouths."