Answer

No, Diksha is not mandatory for rebirth as a human in Mahavideh kshetra.

Explanation

In Jain tradition, rebirth in Mahavideh kshetra happens because of highly auspicious karma and punya. Diksha is a very powerful spiritual step and a great cause for liberation, but it is not the only path to being born there as a human.

What matters more is:

• strong punya
• right faith
• pure conduct
• non-violent and restrained living
• auspicious karmic bondage

Spiritual Understanding

Mahavideh kshetra is especially significant because Tirthankaras are continuously present there, and souls can receive spiritual guidance. So while Diksha is not compulsory for such a birth, it is considered one of the highest paths for purification of the soul.

If the goal is:

• human birth in Mahavideh kshetra: Diksha is not mandatory
• moksha / liberation: Diksha or deep spiritual purification is essential

Takeaway

Diksha is not required just to be born as a human in Mahavideh kshetra, but it is one of the most elevated means for advancing toward liberation.