Old soni after die which gati born

In Jainism, after death, the soul (jiva) is reborn in one of the four gatis (realms of existence), depending on its karma:

1. Deva Gati (Heavenly beings)
2. Manushya Gati (Human beings)
3. Tiryanch Gati (Animals, birds, insects, plants, etc.)
4. Naraka Gati (Hell beings)

The specific gati where a soul is born after death is determined by the accumulation and nature of its karmas, not by age, caste, or community (such as "Soni"). Jainism teaches that regardless of being old or young, or belonging to any specific social group, it is one’s actions, thoughts, and karma that decide the next birth. Therefore, the soul of an "old Soni" (or anyone else) could be born in any of the four gatis, based on karmic bondage at the time of death.

For more detailed insight, one should reflect on the types of karma accumulated and refer to Jain scriptures like Tattvartha Sutra, which explain these processes.