In the 9th Canto we will study Chapters 4-5:

Chapter 4 - Ambarīṣa Mahārāja Offended by Durvāsā Muni
Chapter 5 - Durvāsā Muni’s Life Spared

SB 9.5.27 — Anyone who chants this narration or even thinks of this narration about the activities of Mahārāja Ambarīṣa certainly becomes a pure devotee of the Lord.

SB 9.5.28 — By the grace of the Lord, those who hear about the activities of Mahārāja Ambarīṣa, the great devotee, certainly become liberated or become devotees without delay.