Srimad-Bhagavatam: Canto 10 - Chapter 1 - Verse 24

Sanskrit:

मञ्चा: क्रियन्तां विविधा मल्लरङ्गपरिश्रिता: ।पौरा जानपदा: सर्वे पश्यन्तु स्वैरसंयुगम् ॥ २४ ॥

ITRANS:

mañcāḥ kriyantāṁ vividhāmalla-raṅga-pariśritāḥpaurā jānapadāḥ sarvepaśyantu svaira-saṁyugam

Translation:

Erect a wrestling ring with many surrounding viewing stands, and bring all the residents of the city and the outlying districts to see the open competition.

Purport:

The word mañcāḥ refers to platforms constructed with large pillars. Kaṁsa wanted a festive atmosphere so that Kṛṣṇa and Balarāma would not be afraid to come.