The letter was written by Augustine because of some disturbances in the female monastery in Hippo. Its second part is commonly known as the 'Rule for the Nuns'. The parts cited here show that there was a presbyter who was charged with supervising the monastery. In chapter 11 he is shown as having more or less the same authority as the superior of the monastery, and in chapter 15 he is shown as someone rather above her.
Nearly exactly the same expressions (only with the change of the gender of the superior) appear in the "Praeceptum", known also as the "Third Rule" of Augustine (CPL 1839b). It is mentioned neither in Augustine's “Retractations”, nor in the “Indiculus” of Possidius. Therefore, Augustine's authorship of the “Third Rule” has been discussed. However, it may be accepted because of the parallels with Augustine's undisputed works. The proposed dates of composition are: AD 397 (as designed for the Hippo monastery), AD 400/401 (it would be directed to the refractory monks near Carthage to whom Augustine wrote “The Work of Monks”), and AD 426/427 (with links to the monks at Hadrumetum).