In the assembly where mother Sita was to choose her husband, in the midst of the heroes of this world, He (Lord Ramacandra) broke the bow belonging to Lord Siva

Expressions researched:
"In the assembly where mother Sita was to choose her husband, in the midst of the heroes of this world, He broke the bow belonging to Lord Siva"

SB Canto 9

O King, the pastimes of Lord Rāmacandra were wonderful, like those of a baby elephant. In the assembly where mother Sītā was to choose her husband, in the midst of the heroes of this world, He broke the bow belonging to Lord Śiva. This bow was so heavy that it was carried by three hundred men, but Lord Rāmacandra bent and strung it and broke it in the middle, just as a baby elephant breaks a stick of sugarcane.

SB 9.10.6-7, Translation:

O King, the pastimes of Lord Rāmacandra were wonderful, like those of a baby elephant. In the assembly where mother Sītā was to choose her husband, in the midst of the heroes of this world, He broke the bow belonging to Lord Śiva. This bow was so heavy that it was carried by three hundred men, but Lord Rāmacandra bent and strung it and broke it in the middle, just as a baby elephant breaks a stick of sugarcane. Thus the Lord achieved the hand of mother Sītā, who was equally as endowed with transcendental qualities of form, beauty, behavior, age and nature. Indeed, she was the goddess of fortune who constantly rests on the chest of the Lord. While returning from Sītā's home after gaining her at the assembly of competitors, Lord Rāmacandra met Paraśurāma. Although Paraśurāma was very proud, having rid the earth of the royal order twenty-one times, he was defeated by the Lord, who appeared to be a kṣatriya of the royal order.