Can a castrated man reach self-realization

1. To whom is realization? It is to the individual consciousness, which has associated itself with the Ego and considers itself separate.

2. What is self-realization? When the Ego is dissolved, individual consciousness merges into the Universal.

Take glass bottle, fill it with sea water, close the cap and throw it into the ocean. It is same water, which exists in both the bottle and the ocean. Yet, the water in the bottle is not behaving as the water in the ocean does. It cannot remain as fresh as the ocean water. It does not have the power of the water in the ocean. It is not as free and unlimited as the water in the ocean. It has become limited, powerless, immobile and dead as compared to the ocean water, which is in all magnificence & glory...

The individual consciousness is the water in the bottle, one's 'Ahamkara' (Ego) is the bottle and the Supreme is the ocean. If one were to break open the bottle, the water in the bottle would merge with the water in the ocean. Is there any difference between the two now? The bottled water has merged into the ocean water. They have become one. Can they be separated now? It is impossible. It is as simple as that.

The Sadhaka strives to break and dissolve the Ego, which is acting as a barrier between his 'Atman' (self) and the  Supreme, through long and uninterrupted Sadhana. As he progresses, the Ego gradually breaks down. When it is fully gone, his sense of individual identity goes away, for he becomes one with the universal, just as the bottled water became one with the ocean water. That is realization. Very simple.

Hence the act of castration does not come into the picture. A castrated person can also achieve realization, which is permanent dissolution of the Ego.

ॐ तत् सत्
(That Supreme being is the absolute truth)