"Uttarakuru (Sanskrit: उत्तर कुरु) is the name of a dvipa ("continent") in ancient Hindu and Buddhist mythology......Uttarakuru country and its people are sometimes described as belonging to the real world, whereas at other times they are mythical or otherworldly spiritual beings.....Aitareya Brahmana makes first reference to Uttarakuru and Uttaramadra as real-life Janapadas. According to Aitareya Brahmana, these two nations lay beyond the Himalayan ranges (Hindukush). The Aitareya Brahmana adduces these two people as examples of republican (vairajiya) nations, where whole Janapada took the consecration of rulership.......Aitareya Brahmana again notes that Uttarakuru was a deva-kshetra or divine land......Uttarakuru also finds numerous references in Buddhist literature, sometimes as a real land and other times as a mythical region.....Ramayana testifies that the original home of the Kurus was in Bahli country. Ila, son of Parajapati Karddama was a king of Bahli, where Bahli represents Sanskrit Bahlika (Bactria)....Bahlika or Bactria may have constituted the Uttarakuru. Mahabharata and Sumangalavilasini also note that the people of Kuru had originally migrated from Uttarakutru. Bactria is evidently beyond the Hindukush.....".....Geographical Data in Early Puranas, 1972, Dr M. R. Singh
"Uttara Madra is a kingdom grouped among the western kingdoms in the epic Mahabharata. It is identified to be located to the northwest of eastern Madra with Sagala as its capital. It was situated along the ancient route called Uttarapatha extending from Vanga Kingdom in the eastern sea shore through the Gangetic Plain, Punjab, mountain passes of the Western Mountains, to the city of Balkh in Afghanistan and to the far western countries. In some parts of the epic, Uttara Madra and Bahlika are considered as the same country. Arjuna collected tribute from Uttara Madra during his northern military campaign for Yudhishthira's Rajasuya sacrifice."....https://en.wikipedia.org/wiki/Uttara_Madra_Kingdom
"The Aitareya Brahmana (Sanskrit: ऐतरेय ब्राह्मण) is the Brahmana of the Shakala shakha of the Rigveda, an ancient Indian collection of sacred hymns.....The Aitareya Brahmana is dated variously from 1000 BC to 500 BC."....https://en.wikipedia.org/wiki/Aitareya_Brahmana
"Jean Przylusky has shown that Bahlika (Balkh) was an Iranian settlement of the Madras who were known as Bahlika-Uttaramadras....The Kambojas, the neighbors of the Uttaramadras, here obviously refers to the Parama-Kambojas branch the Kambojas located in Trans-Hindukush regions."....An Ancient People of Panjab, The Udumbras, Journal Asiatique, 1926, p 11, Jean Przylusky showing that Bahlika (Balkh) was an Iranian settlement of the Madras who were known as Bahlika-Uttaramadras.
"The Uttaramadra was the northern branch of the Madra people who are numerously referenced in ancient Sanskrit and Pali literature. In Aitareya Brahmana (VIII.14), the Uttarakuru and the Uttaramadra tribes are stated to be living beyond Himalaya.
"Since Uttarakuru of the Aitareya Brahmana is said to lie beyond Himalaya, the Bahlika or Bactria is also beyond Hindukush (i.e ... Kurus, the Madras were also originally a people living in/around Bahlika as is suggested by Vamsa Brahmana of the Sama Veda which text refers to one Madragara Shaungayani as ... In Aitareya Brahmana, the Uttarakurus and Uttaramadras are stated as living beyond Himalaya (paren himvantam) ..."....http://www.liquisearch.com/what_is_aitareya_brahmana
"The Ramayana seems to localize the Uttarakurus in Bahlika country. According to it, Ila, son of Prajapati Karddama, king of Bahli (Bahlika) country, gave up Bahli in favor of his son Sasabindu and founded the city of Pratisthana in Madhyadesa. The princes of the Aila dynasty (which is also the dynasty of Kurus) have been called Karddameya. The Karddameyas obtained their names from river Kardama in Persia and therefore, their homeland is identified with Bahlika or Bactria. This indicates that Bahlika or Bactria was the original home of the Kuru clans.... According to Jean Przylusky, the Bahlika (Balkh) was an Iranian settlement of the Madras who were known as Bahlika-Uttaramadras...in the remote antiquity (Vedic age), the (Iranian settlement of) the Madras was located in parts of Bahlika (Bactria)--the western parts of the Oxus country. These Madras were, in fact, the Uttaramadras of the Aitareya Brahmana (VIII/14). However, in 4th c BC, this Bahlika/Bactria came under Yavana/Greek political control and thus the land started to be referenced as Bahlika-Yavana in some of ancient Sanskrit texts..".....http://www.liquisearch.com/bahlikas/kurus-bahlikas-kambojas-madras_remote_connection
".... the Uttarakurus, Uttaramadras and Kambojas-- all were located beyond the Himalaya/Hindukush ranges. Probably, the Uttarakurus were located in the northern parts of Bahlika, the Uttaramadras were in the southern parts of it and the Kambojas (=Parama Kambojas) were to the east of Bahlika, in the Transoxiana region. The ancient Bahlika appears to have spanned a large expanse of territory. The commentator of Harsha-Carita of Bana Bhatta also defines the Kambojas as Kambojah-Bahlika-Desajah i.e. the Kambojas originated in/belonged to Bahlika. Thus, it seems likely that in the remote antiquity, the ancestors of the Uttarakurus, Uttaramadras and the Parama Kambojas were one people or otherwise were closely allied and had lived in/around Bahlika (Bactria)."............http://www.liquisearch.com/bahlikas/kurus-bahlikas-kambojas-madras_remote_connection
"Astronomy played a significant role in Vedic rituals, which were conducted at different periods of a year. The Aitareya Brahmana (4.18) states the sun stays still for a period of 21 days, and reaches its highest point on vishuvant, the middle day of this period...".....https://en.wikipedia.org/wiki/Aitareya_Brahmana
"This work, according to the tradition, is ascribed to Mahidasa Aitareya.".....Arthur Berriedale Keith (1920). Rigveda Brahmanas: The Aitareya and Kausitaki Brahmanas of the Rigveda. Mot
"The Aitareya Aranyaka is undoubtedly a composite work, and it is possible that the Aitareya Brahmana also had multiple authors."
"The Aitareya Brahmanam of the Rigveda: Translation, edited by Martin Haug...(1827-1876)..... Oriental scholar and one of the founders of Iranian studies. His contributions to Old and Middle Iranian studies remained influential well into the twentieth century....His intimate, cordial, and affable manner of communicating with Hindu brahmans and Parsi priests (dasturs) enabled him to obtain the most extended and accurate information concerning their beliefs, rites, and customs ever vouchsafed to any European....He also bought Avesta, Pahlavi, and Vedic manuscripts for his own private collection.....His lectures on Indo-Iranian philology, linguistics, and Oriental studies....Haug published his Essays on the Sacred Language, Writings and Religion of the Parsis (Bombay, 1862), which offered the first grammatical description of the Avestan language in comparison with Sanskrit.....Haug argued that Zarathushtra taught a pure, ethical monotheism and a philosophical dualism, that there was no evidence for rituals in the Gathas, and that the prophet’s teachings were corrupted by later generations."...http://www.iranicaonline.org/articles/haug-martin
The Aitareya Brahmanam of the Rigveda: Translation, edited by Martin Haug.....http://www.wilbourhall.org/pdfs/vedas/aitereya/the_aitareya_brahmanam_of_the_rigveda__s.pdf
Studies in Vedic and Indo-Iranian Religion and Literature....by Kshetresh Chandra Chattopadhyay.... 1978....The University of Virginia