How does the narrative of the two brothers illustrate the 'suffering of fate' and the influence of karma as explained by Baba?

The story of the two brothers, as recounted by Sai Baba in Chapter 46, serves as a powerful illustration of the harshness of fate and the influence of karma. The text explicitly mentions that "the suffering of fate is very hard" and that a "difficult combination of karma and circumstances" led to their downfall. Despite being human and close to Baba in a previous life, their "uncontrollable" greed for wealth overrode their brotherly love. This delusion led them to plot against each other and ultimately commit mutual fratricide. Baba explains that upon their deaths, they "entered this species (goats)" specifically "to suffer for their past deeds," demonstrating how karma shapes rebirth.