If the Hindu friends of yours have an English copy of the Vedas or Upanishads, you may refer to it to find an equivalent of these verses:
In the Rig Veda (RV: VIII.43.11) Agni is described as "fed on ox and cow" suggesting that cattle were sacrificed and roasted in fire. Another hymn (RV: X.16.7) mentions the ritual enveloping of the corpse with cow flesh before applying the fire on it.
In the Brahmanas at 1.15 in the Aiteriya Brahmana, the kindling of Agni on the arrival of King Some is compared to the slaughter of a bull or a barren cow on the arrival of a human king or other dignitary.
Similarly, at II.1.11.1 in the Taiteriya Brahmana and XXXI.14.5 in the Panchavinsha Brahmana, the rishi Agastya is credited with the slaughter of a hundred bulls.
In verse III.1.2.21 in the Satapatha Brahmana, sage Yajnavalkaya asserts that even though the cow is the supporter of everyone, he would eat beef "if it is luscious." At IV.5-2.1 in the same Brahmana, it is said that a barren cow can be slaughtered in the Some sacrifice. Not only for religious purposes, but also for other purposes one could kill a cow and eat beef. Thus at II.4.2 of the same Brahmana, it is suggested that a fat bull or fat goat should be sacrificed in honour of an important guest.
Similarly, the Brihadaranyaka Upanishada (VI.4.18) advises a couple to take an evening meal of beef or veal pulao, if they desire to beget a son who is learned in the Vedas [Robert Trumbull, As I see India, London, 1957, p.241].
http://economictimes.indiatimes.com/articlelist/6274210.cms
Swaminathan S. Anklesaria Aiyar is Consulting Editor, Economic Times and writes regularly for the Economic Times and The Times of India.
If you doubt that this writer exists, then why don't you email timesofindia.com for a verification of the same article by him which I posted above, which apeared on the August 24, 2003 issue of the newspapers Times of India and Economic Times?
Your latest post quoting something reported second, third or fourth hand in an economic paper also does not support your claims nor is it proof of your nonsense about Hinduism and the Vedas.