Dehlavi_dialect
Old Hindi
Earliest historical form of Hindustani (Urdu and Hindi)
Old Hindi,[upper-alpha 1] or Khariboli was the earliest stage of the Hindustani language, and so the ancestor of today's Modern Standard Hindi and Standard Urdu registers.[2] It developed from Shauraseni Prakrit and was spoken by the peoples of the region around Delhi, in roughly the 10th–13th centuries before the Delhi Sultanate.
During the Muslim rule in India, Old Hindi began acquiring loanwords from the Persian language, which led to the development of Hindustani.[3][4] It is attested in only a handful of works of literature, including some works by the Indo-Persian Muslim poet Amir Khusrau, verses by the poet-saint Namdev, and some verses by the Sufi Muslim saint Baba Farid in the Adi Granth.[5][6] The works of Kabir also may be included, as he use a Khariboli-like dialect. Old Hindi was originally written in a Nagari script (ancestor to the standardized Devanagari) and later in the Perso-Arabic script as well, in Nastaliq calligraphy.[7]
Some scholars include Apabhraṃśa poetry as early as 769 AD (Dohakosh by Siddha Sarahapad[8][9]) within Old Hindi,[10] but this is not generally accepted.[11]
With loanwords from Persian being added to Old Hindi's Prakritic base, the language evolved into Hindustani, which further developed into the present-day standardized varieties of Hindi and Urdu.[10]