《礼记·檀弓下》
而士大夫们在卒哭以后也脱去了孝服，吉服进宫上班。孔子有个老朋友叫原壤，他的母亲去世了，孔子帮助他修治撑材。
孔子之故人曰原壤，其母死，夫子助之沐椁。
The scholars also took off their mourning clothes after the mourning period and put on their auspicious clothes to go to the palace to work. Confucius had an old friend named Yuan Rang, whose mother died, and Confucius helped him to prepare the wood for the coffin.