Hinduism does not advocate conversion.
It believes that Religion is a question of personal choice and holds it sacred.
It does not believe in numbers game.
Hinduism is like a Doctor.
If and when you are sick you go to Doctor.
The Doctor prescribes you medicines.
He does not force you to take the medicine.
It is in your interest to take it.
The Doctor is not affected by your action.
Hinduism is like the Doctor.
It tells you the paths traversed by people who have realized God hood.
In the Bhagavad Gita, Lord Krishna explains about the various systems of Hindu Thought to Arjuna.
In the last chapter(18),just about to conclude the discourse , informs Arjuna,
‘I have told you what is utmost secret.
You examine them carefully and follow whatever suits and what your disposition tells You’
Hinduism is a way of Life.
Strictly speaking it is difficult to define who a Hindu is.
A Hindu is one who follows certain guidelines of Life and Beyond.
Not necessary to have been born a Hindu.
One need not believe in God even for Atheism is also accepted as a Faith in Hinduism.
However there are certain rules ,qualifications required to study the Vedas, the Sacred Books of the Hindus.
Hindus, though not advocating religious Conversion accepts people from the other Faiths .
There are no ceremonies involved.
Example of this is the worship of Lord Vishnu, by Helidorus, Ambassador to India to Gupta King’s court.
He erected a column in tribute to Lord Vishnu and it is called Heliodorous Column.
It is known that Heliodorus was sent to the court of King Bhagabhadra by Antiakalidas, the Greek king of Taxila. The kingdom of Taxila was part of the Bactrian region in northwest India, conquered by Alexander the Great in 325 B.C. By the time of Antialkidas, the area under Greek rule included what is today Afghanistan, Pakistan and Punjab.(2)
The column erected by Heliodorus first came to notice in 1877, during an archaeological survey by General Cunningham. The inscription, however, went unnoticed, because of the pillar’s thick coating of red lead paste. It had been the custom of pilgrims who had worshipped there to smear the column with vermillion paste. The column, Cunningham deduced from its shape, was from the period of the Imperial Guptas (3) (A.D. 300-550). Thirty-two years later, however, when the inscription was brought to light, it became clear that the monument was several centuries older. (4)..
A reproduction of the inscription, along with the transliteration and translation of the ancient Brahmi text, is given here as it appeared in the Journal of the Royal Asiatic Society.
1) Devadevasu Va[sude]vasa Garudadhvajo ayam
2) Karito ia Heliodorena bhaga
3) Vatena Diyasa putrena Takhasilakena
4) Yonadatena agatena maharajasa
5) Amtalikitasa upa[m]ta samkasam-rano
6) Kasiput[r]asa [Bh]agabhadrasa tratarasa
7) Vasena [chatu]dasena rajena vadhamanasa
” This Garuda-column of Vasudeva (Visnu), the god of gods, was erected here by Heliodorus, a worshipper of Vishnu, the son of Dion, and an inhabitant of Taxila, who came as Greek ambassador from the Great King Antialkidas to King Kasiputra Bhagabhadra, the Savior, then reigning prosperously in the fourteenth year of his kingship.”
1) Trini amutapadani-[su] anuthitani
2) nayamti svaga damo chago apramado
“Three immortal precepts (footsteps)..when practiced lead to heaven-self restraint, charity, conscientiousness.”
From the inscriptions it is seems clear Heliodorus was influenced by Vedic principles that he could be considered to be a Vaisnava, a follower or worshipper of Visnu. Professor Kunja Govinda Goswami of Calcutta University concludes that Heliodorus ” was well acquainted with the texts dealing with the Bhagavat [Vaisnava] relgion.” (6)