What is the full story from the previous chapter about rebirth being used to settle enmity and debt?

Chapter 48 briefly references a narration from a previous chapter, stating that one takes rebirth to settle matters like enmity, murder, and debt, and to experience the consequences of their own Karma. However, the provided text from Chapter 48 does not recount the full details of that specific story. Instead, it contrasts this ordinary cycle of rebirth with that of Saints, who are said to never forget their past, are not subject to ordinary birth, and exist to remove the calamities of their devotees. The text from Chapter 48 emphasizes that those devotees who place faith at the feet of such Saints will attain success.