SB 10.36.24

mañcāḥ kriyantāṁ vividhā
 malla-raṅga-pariśritāḥ
paurā jānapadāḥ sarve
 paśyantu svaira-saṁyugam
Word for word: 
mancāḥ — stages; kriyantām — should be built; vividhāḥ — various; malla-raṅga — a wrestling ring; pariśritāḥ — surrounding; paurāḥ — the residents of the city; jānapadāḥ — and the residents of the outlying districts; sarve — all; paśyantu — should see; svaira — voluntarily participated in; saṁyugam — the competition.
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.