According to Jainism, Mahapadma is one of the sons of King Rāvaṇa, as mentioned in some Jain texts. The Jain Ramayana tradition differs from the Hindu version, and in Jain narratives, Rāvaṇa had several sons, including Mahapadma.

Regarding the fate of Mahapadma after death, Jain scriptures often detail the karmic consequences of one's actions. If someone commits acts of violence, deceit, or other sinful actions (pāpa karma), they may be reborn in lower realms like Naraka (hell) as a result of their karma. However, specific details about Mahapadma's rebirth in Naraka are not explicitly highlighted in the most commonly referenced Jain texts.

The Jain tradition emphasizes that regardless of one's identity, it is the karma accumulated through one’s actions that determines the next birth, including the possibility of being reborn in Naraka. If you are referring to a specific story or interpretation from a local Jain text or tradition that states Mahapadma went to Naraka, it would be a regional or sectarian narrative rather than a universally accepted Jain doctrine.

In summary, Jainism teaches that one's rebirth is determined by karma, and if Mahapadma or anyone else performed actions resulting in negative karma, rebirth in Naraka is possible. However, there is no universal Jain scripture that states definitively that Mahapadma, son of Rāvaṇa, went to Naraka.