It is narrated from Hazrat Abu Musa (may Allah be pleased with him) that once the Noble Prophet (peace and blessings be upon him) saw a person praising someone (in his presence) and exaggerating in it, so he said: "You have broken his back."
Hadith Referenceمسند احمد / تتمہ مُسْنَدِ الْكُوفِيِّينَ / 19692