Analysis of information sources in references of the Wikipedia article "हिन्दुस्तानी भाषा" in Hindi language version.
The Hindi film industry used the most popular street level version of Hindi, namely Hindustani, which included a lot of Urdu and Persian words.
The position of Hindi–Urdu among the languages of the world is anomalous. The number of its proficient speakers, over three hundred million, places it in third of fourth place after Mandarin, English, and perhaps Spanish.
The "Ganga-Jamuni tehzeeb" is one such instance of the composite culture that marks various regions of the country. Prevalent in the North, particularly in the central plains, it is born of the union between the Hindu and Muslim cultures. Most of the temples were lined along the Ganges and the Khanqah (Sufi school of thought) were situated along the Yamuna river (also called Jamuna). Thus, it came to be known as the Ganga-Jamuni tehzeeb, with the word "tehzeeb" meaning culture. More than communal harmony, its most beautiful by-product was "Hindustani" which later gave us the Hindi and Urdu languages.
Hindustani - term referring to common colloquial base of HINDI and URDU and to its function as lingua franca over much of India, much in vogue during Independence movement as expression of national unity; after Partition in 1947 and subsequent linguistic polarization it fell into disfavor; census of 1951 registered an enormous decline (86-98 per cent) in no. of persons declaring it their mother tongue (the majority of HINDI speakers and many URDU speakers had done so in previous censuses); trend continued in subsequent censuses: only 11,053 returned it in 1971...mostly from S India; [see Khubchandani 1983: 90-1].
