According to Chapter 4, what specific signs of societal decay signal the time for a Saint's incarnation?

Chapter 4 provides a detailed list of societal conditions that precipitate the advent of a saint. These signs include a breakdown of the social order, where Brahmins despise their own caste and Shudras try to become Brahmins. Other indicators mentioned in Chapter 4 are when religious teachers are insulted, when people become arrogant and consider themselves scholars, and when sectarian hatred grows. The text also points to a moral decline, such as when Brahmins openly consume liquor and meat and people ignore proper conduct, signaling a time of distress that requires a saint to descend and restore dharma.