In Jain Dharma, this principle is written as the law of karma: the soul experiences sukha-duḥkha according to the udaya (fruition) of its own karmas.

You will find this teaching mainly in:

• Tattvārtha Sūtra — especially in the chapters on karma-bandha, udaya, nirjarā, and moksha
• Uttarādhyayana Sūtra
• Bhagavatī Sūtra

The core Jain meaning is:

• nothing happens by random fate alone,
• each soul receives results according to its own karma,
• and by right conduct, austerity, and vigilance, karma can be stopped and shed.

A simple Jain statement of this truth is: “Jīva experiences results according to its own karma.”

If you want, I can also give you the exact Jain verse / sutra references for this teaching.