Any study of the population of the precensus times can be based only on estimates, and estimates by their very nature tend to be tentative. - K. S. Lal

But even in the deepest darkness light persists. Timur’s gruesome invasion had a silver lining. Hindus and Muslims all stood up to a man to fight him wherever he went. The days of Mahmiid of Ghazni were a story of the past, and Timur met resistance everywhere. The people of India were known for their disunity in the face of a foreign invader. But they stood united against Timur. At Tulamba, Ajodhan, Deopalpur, Bhatnir, Meerut and Delhi—nay everywhere —the Hindus and Muslims fought shoulder to shoulder against the , invader. Shaikh Sa’iduddin interceded with Timur on behalf of the Hindu chief of Bhatnir. At Meerut, Ilyas Afghan, a Muslim, burnt his womenfolk in the fire of jawhar. During Timur’s visitation the Hindus and Muslims learnt to sink their differences and stand united.

I knew Muhammad Mujeeb personally. He was Head of the Department of History and Shaikh-ul-Jamia... In 1972, however, there was a mild 'confrontation' between him and me. Sometime that year there was a Selection Committee meeting for the post of Professor of History in Delhi University. I was then a Reader and candidate for the post of Professor. Mujeeb was an 'expert'... Mujeeb asked me a question: "Why did the Hindu convert to Islam?" It was a loaded question carrying the suggestion that the initiative for conversion came from the Hindu. In all probability Mujeeb expected me to say that the Hindus suffered from the injustices of the caste system, that Islam was spiritually so great and its message of social equality so attractive that the Hindus queued up for conversion the moment they came in contact with Islamic invaders. A tactful candidate (not a truthful one) would have said what Mujeeb desired, but my answer was different. I said that Hindus did not (voluntarily) convert to Islam; they were converted, often forcibly, as told by Muslim chroniclers. Muslim invaders and rulers felt proud of their achievements in the fields of loot and destruction, enslavement and proselytization. Their chroniclers, writing at their command or independently, speak about their achievements in these spheres in glowing terms. They repeatedly write about the choice offered to the Hindus - "Islam or death". Mujeeb expected a different answer. I was not selected.

Mahmud's invasions alone meant to the country' a loss of about two million people.... Bakhtiyar Khalji marched through Bihar into Bengal and massacred people in both the regions. During his expedition to Gwalior Iltutmish (1210-36) massacred 700 persons besides those killed in the battle on both sides. His attacks on Malwa (VMisha and Ujjain) were met with stiff resistance and were accompanied by great loss of life. He is also credited with killing 12,000 Khokhars (Gakkhars) during Aibak's reign. The successor of XhutmisK (Raziyah, Bahrain etc.,) too fought and killed zealously.