For all the people that think Hindi is older than Urdu, can they provide any literary works or poetry written in Hindi in the last few hundred years? Ghalib, Iqbal, Khusro, Bahadur Shah Zafar & many others are Urdu poets, not Hindi or Hindustani; as an average Hindi/Hindustani speaker cannot understand them.
The simple conclusion of this Hindi-Urdu controversy is that, there was never a language called Hindi prior to 1867. There was only one language, with many forms such as Hindwi, Rekhta, & most common with present day Urdu today. Urdu formed when the Muslim invaders came into the Indian subcontinent, which resulted in the amalgamation of Persian, Arabic, Turkish with the Sanskrit spoken in India, resulting in Hindwi (closely resembling Rekhta Urdu, nothing like Hindi). Hindus started translating literary works written in Nastaliq into Devanagari script, resulting in Hindi. This resulted in the 1867 Hindi-Urdu controversy.
After 1947, Indians started making Hindi (Urdu written in Devanagari script) 'shudh' by Sanskritizing it, and removing the Arabic/Persian root words.