Hazrat Umar (may Allah be pleased with him) once passed by Hazrat Hassan bin Thabit (may Allah be pleased with him) who was reciting poetry in the mosque. Hazrat Umar (may Allah be pleased with him) glanced at him with the corner of his eye, so he (Hassan) said, "I used to recite poetry in this mosque at a time when one better than you was present here." Upon this, Hazrat Umar (may Allah be pleased with him) left him and moved on.