Any human being world over belonging to any religion faith or belief but possessing competence of Swami Vivekananda can successfully indulge in Indian spirituality detailed in Bhagavad Gita to reach state of moksha salvation. The road to abode of God had no restrictions whatsoever.
If we can successfully contemplate (indulge in chintan) on abstract fundamentals of spirituality contained in Bhagavad Gita and Upanishads (independent spiritual treatises) then we were competent to gain enlightenment and finally moksha salvation.
Gaining enlightenment followed by moksha was never the domain of limited few. In earlier era particularly in the erstwhile Bharatvarsha (now India) many people from lower castes were prohibited to indulge in scriptures. This was the biggest fallacy of Brahmin Samaj for which they are suffering now in present times.
During the times of Mira Bai, a very ardent devotee of Lord Krishna she was prohibited to enter precincts of a Temple. No matter what persuasion the head priest pundit did not permit her to enter. Mira Bai simply went home and sent a small chit to the head priest of the Temple. All of a sudden the head priest of the Temple went to Mira Bai and fell at her feet asking for forgiveness.
What was it that Mira Bai had written on the chit? Mira Bai had just written that Purusha in the entire world was only one, Brahman the Almighty God rest all were women. As women were not allowed to enter the precincts of the Temple, hence the commotion! Subsequently all ladies were permitted to enter the Temple any given moment of time.
Similarly the doors of God were open to one and all every given moment of life. Any human being from the lowest rung of the society to the highest who is competent to indulge in Indian spirituality can travel path of spirituality to reach state of enlightenment and finally moksha salvation.
Looking at spirituality from God point of view, when God has not closed his doors for letting only the privileged few, how could priests of any Temple bar human beings from entering the precincts. The distinction between men and women is a creation of the religious clergy having nothing to do with God. Owing to vested interests such policies are enacted from time to time.
Finally when the law takes its course, such unilateral decisions bite the dust.
Lord Krishna in Bhagavad Gita explicitly says, any human being world over could indulge in teachings contained in Bhagavad Gita to reach God. We only need process the capability of Swami Vivekananda. One who can master the delicate art of contemplation (chintan) was competent to indulge in Indian spirituality.
Furthermore the seeker must be prepared for travelling path of 100% truthfulness. One must also possess 100% faith in God. One must also believe in existence of souls atmans in cosmos. Furthermore to reach stage of moksha practice of absolute celibacy for a minimum period of 12 years in continuation is necessitated, only then our kundalini awakened fully.
If we can do all as above we were the right candidate to indulge in spirituality to reach god.
On path of karma at whatever level of karmic index one is, by indulging in absolute celibacy one can take a quantum jump and successfully reach last manifestation, the 8.4 millionth manifestation, last in cosmic life cycle.