This world where creatures live is called the field of action. Performing acts, good or bad, all embodied creatures attain to the fruits thereof.
ततः शुभाशुभं कृत्वा लभन्ते सर्वदेहिनः। इहैवोच्चावचान् भोगान् प्राप्नुवन्ति स्वकर्मभिः॥