Where can I find the source of Augustine's "Disturbers are to be rebuked" quote?

There is a fairly famous quote that begins "Disturbers are to be rebuked, the low-spirited to be encouraged, the infirm to be supported, objectors confuted..." It is usually attributed to Augustine's "*Sermo ccix*" (Sermon #209). This reference is given in JT McNeill's "A history of the cure of souls" (1951, [page 100](https://archive.org/details/historyofcureofs0000mcne/page/100/mode/2up)) , and that work is sometimes mentioned in conjunction with the quote. However, I cannot find the full source of the sermon in question. I can find at least two different sermons that have been given that numbering. Neither appear to contain a translation of that quote. What seems to be most likely "*Sermo ccix*" is sermon 209 of the Maurist editions of Augustine's sermons, a numbering system subsequently used by Migne and the New City organisation. However, the sermon given that number here is a seemingly unrelated Lenten one. (Read Sermon #209 in [Latin](https://www.documentacatholicaomnia.eu/02m/0354-0430,_Augustinus,_Sermones_Ad_Populum._Classis_II._De_Tempore,_MLT.pdf#page=26) and [English](https://wesleyscholar.com/wp-content/uploads/2019/04/Augustine-Sermons-184-229.pdf#page=121)) . **Where can the full sermon containing the famous quote be found?** (Preferably in either Latin or English).