Ananda visits a settlement of nuns at Sāvatthi und is told that the nuns who have cultivated the four satipatthānas have attained to greater excellence of comprehension than before. Ananda says that is how it should be. Later, he visits the Buddha und reports to him the incident. The Buddha tells him how to develop the satipatthānas und of the advantages resulting there from.
The sutta ends mit an exhortation to earnestness und diligence. There are plenty of places suitable for meditation, one should not therefore be remiss mit regard to this. S.v.154f.