The eleventh sutta of the Sutta Nipáta.
According to Buddhaghosa (SNA.i.241f), this sutta was preached on two occasions: once to Janapadakalyání Nandá, following her attainment of sotápatti, in order to help her to higher attainment - and again when the Buddha took the monks to the funeral of Sirimá, sister of Jívaka. The sutta is also called the Káyavicchandanika Sutta.
The sutta is a discourse on the foul nature of the body, full of impurities flowing in nine streams; when dead, nobody cares for it. Only a monk, possessed of wisdom, understands it and reflects on its worthlessness. SN. vs. 193-206; cf. J.i.146.