Answer

Yes, it is still possible to take diksha in the present life if one has already bound āyuṣya karma for a future birth such as nārak or tiryañch.

But that already-bound āyuṣya karma for the next birth generally cannot be changed. Diksha can still greatly purify the soul, reduce future bondage, destroy or suppress many karmas, and lead to tremendous spiritual progress.

Explanation

In Jain karma theory:

• Āyuṣya karma determines the lifespan and realm of the next birth.
• Once a particular āyuṣya karma has been firmly bound for the next birth, it is considered fixed according to Jain doctrine.
• Taking diksha after that does not usually cancel that already-bound next-birth āyuṣya karma.

However, diksha is still extremely meaningful because:

• It stops much new sinful karma through restraint and discipline.
• It helps shed previously bound karmas through tapas, samayik, pratikraman, meditation, vinay, and right conduct.
• It may improve the soul’s future spiritual journey after that next birth.
• It creates powerful causes for liberation in later progression.

So, even if the next birth’s āyuṣya karma is already bound, present spiritual effort is never wasted.

Spiritual Understanding

Jain Dharma teaches that every moment of awareness, repentance, restraint, and right conduct matters.

If a person feels genuine vairagya and has the eligibility for diksha, they should not think:

• “My future is already ruined.”
• “Now spiritual effort is useless.”
• “There is no point in renunciation.”

That thinking itself can create more spiritual harm.

Instead, one should think:

• “Whatever karma has been bound, I will now live with samyak bhav.”
• “I will stop further downfall.”
• “I will purify my soul as much as possible.”

Diksha is not only about the next birth. It is about turning the soul toward moksha.

Takeaway

Even if nārak or tiryañch āyuṣya karma has already been bound for the next birth, diksha can still be taken if one is qualified and accepted by the Guru. The already-bound āyuṣya may remain, but sincere renunciation can transform the soul’s long-term spiritual path.