SB 12.4.43
imam vaksyaty asau suta
rsibhyo naimisalaye
dirgha-satre kuru-srestha
samprstah saunakadibhih
Translation:
O best of the Kurus, the same Suta Gosvami who is sitting before us will speak this Bhagavatam to the sages assembled in the great sacrifice at Naimisaranya. This he will do when questioned by the members of the assembly, headed by Saunaka.
Purport:
Thus end the purports of the humble servants of His Divine Grace A.C. Bhaktivedanta Swami Prabhupada to the Twelfth Canto, Fourth Chapter, of the Srimad-Bhagavatam, entitled “The Four Categories of Universal Annihilation.”