Lokapala sabha is the twenty-first upa parva or the second upa parva under the second maha parva in Mahabharata. Mantra parva or Sabhakhyana is another name for this upa parva. Vyshampayana had narrated the historical events to Janamejaya, on his queries:
What were the instructions received from the learned scholars to Yudhishtira?
The learned scholars instructed Yudhishtira to start for the performance of the Rajasuya yaga. He was presiding in the meeting and asked various experts regarding Rajasuya yaga and received their assurances for the successful conduction of the same.
