The Origins of Indians: Version 6.2.1

More proof on Semitic Introgression:
We have already seen couple of purity and pollution of Hinduism are also part of Jewish tradition. Also, distribution of Haplogroups J2a and G2 gives us clue for these Semitic influence in Hinduism. Now we can go further and compare another Semitic religion Islam and pollution concepts in that religion.

Till now I have found at least one example. Though, probably, that was never seriously practiced by Hindus. But fact that this injunction finds a place in our Dharmashastras shows unquestionable Semitic influence.

From Vasishta Dharmashastra(Part 1, Chapter VI)

12. Let him not void urine in a river, nor on a path, nor on ashes, nor on cowdung, nor on a ploughed field, nor on one which has been sown, nor on a grass-plot, nor in the shade (of trees) that afford protection (to travellers).

13. Standing in the shade (of houses, clouds, and so forth), when it is quite dark, and when he fears for his life, a Brâhmana may void urine, by day and by night, in any position he pleases.

14. (Afterwards) he shall perform the necessary (purification) with water fetched for the purpose (from a tank or river, and with earth).

15. For a bath water not fetched for the purpose (may also be used).

16. (For the purpose of purification) a Brâhmana shall take earth that is mixed with gravel, from the bank (of a river).

17. Five kinds of earth must not be used, viz. such as is covered by water, such as lies in a temple, on an ant-hill, on a hillock thrown up by rats, and that which has been left by one who cleaned himself.

18. The organ (must be cleaned by) one (application of) earth, the (right) hand by three, but both (feet) by two, the anus by five, the one (i.e. the left hand) by ten, and both (hands and feet) by seven (applications of earth).

I believe few orthodox Muslims use chalk or brick. But we can see the common beginning for this cleaning ritual in West Asian society. I am not sure about Jews.

Circumcision:
Of course, probably the most ubiquitous feature of Semitic practices is circumcision. This we do not find in Hindu scriptures. This can be easily explained. The practice of circumcision was an import from Africa(either from Egyptians or from other Africans). So, the Semitic introgression predates entry of circumcision into West Asian society.