Ante-Nicene Fathers, Vol VIII:
Pseudo-Clementine Literature.: Chapter XX

Chapter XX.—Brahmans.

“There are likewise amongst the Bactrians, in the Indian countries, immense multitudes of Brahmans, who also themselves, from the tradition of their ancestors, and peaceful customs and laws, neither commit murder nor adultery, nor worship idols, nor have the practice of eating animal food, are never drunk, never do anything maliciously, but always fear God.  And these things indeed they do, though the rest of the Indians commit both murders and adulteries, and worship idols, and are drunken, and practise other wickednesses of this sort.  Yea, in the western parts of India itself there is a certain country, where strangers, when they enter it, are taken and slaughtered and eaten; and neither have good stars prevented these men from such wickednesses and from accursed food, nor have malign stars compelled the Brahmans to do any evil.  Again, there is a custom among the Persians to marry mothers, and sisters, and daughters.  In all that district the Persians contract incestuous marriages.