Sultan Muhammad bin Tughlak acquired the throne by murdering his father, became a great scholar and an elegant writer, dabbled in mathematics, physic… - Muhammad ibn Tughluq

It is related that his army consists of 900,000 horsemen, a part of them are at His Majesty’s court, others are scattered in the whole country. His Diwan provides for the means of subsistence for all of them. The army consists of Turks, Khitais, Persians, Indians and people of various nations. All of them have branded horses, excellent weapons and are elegant in appearance. The officers of his army are the Khans, Maliks, Amirs, Sipah-Salars and then the ranks.
He relates that in the Sultan’s service there are eighty Khans or more and that each of them has followers according to his rank. The Khan has ten thousand horsemen, the Malik one thousand, the Amir one hundred, and the Sipah-Salar less than that. None of the Sipah-Salars are considered worthy to be near the Sultan, but they can be appointed as Valis or to posts equal to the rank of Vali. The Sultan has ten thousand Turkish slaves and ten thousand eunuchs; one thousand cashholders and one thousand Bashmaqdars [in charge of horseshoes of the Sultan]. He has two lakhs of stirrup slaves, who wear weapons, accompany him always and fight on foot in front of him. The whole army is exclusively attached to the Sultan and his Diwan pays them, even those who are in the service of the Khans and Maliks and Amirs. Fiefs cannot be given to them by their masters as it is the custom in Egypt and Syria….
Besides these he has one thousand falconers (bazdar) who carry the birds of prey for hunting while riding the horses and three thousand drivers who obtain the game; five hundred courtiers (nadim) and two hundred musicians besides his one thousand slaves who are specially trained for music; one thousand poets of fine taste and wit in Arabic, Persian and Hindi. His Diwan pays all these as long as they are men of spotless purity and chastity, in public and private life.

…It is said that the star-shaped Jaina Temple built in the Chalukya style at Bodhan in the 9th or 10th century was, also, transformed into a Mosque during the reign of Muhammad Tughlaq (AH 726-52/AD 1325-51).

One of the gravest charges against the sultan is that of compelling the inhabitants of Delhi to leave the town. The reason for this was that they used to write missives reviling and insulting him, seal them and inscribe them, “By the hand of the Master of the World, none but he may read this.” They then threw them into the audience-hall at night, and when the sultan broke the seal he found them full of insults and abuse. He decided to lay Delhi in ruins, and having bought from all the inhabitants their houses and dwellings and paid them the price of them, he commanded them to move to Dawlat Abad. They refused, and his herald was sent to proclaim that no person should remain in the city after three nights. The majority complied with the order, but some of them hid in the houses. The sultan ordered a search to be made for any persons remaining in the town, and his slaves found two men, in the streets, one a cripple and the other blind. They were brought before him and he gave orders that the cripple should be hung from a mangonel and the blind man dragged from Delhi to Dawlat Abad, a distance of forty days’ journey. He fell to pieces on the road and all of him that reached Dawlat Abad was his leg. When the sultan did this, every person left the town, abandoning furniture and possessions, and the city remained utterly deserted. A person in whom I have confidence told me that the sultan mounted one night to the roof of his palace and looked out over Delhi, where there was neither fire nor smoke nor lamp, and said “Now my mind is tranquil and my wrath appeased.” Afterwards he wrote to the inhabitants of the other cities commanding them to move to Delhi to repopulate it. The result was only to ruin their cities and leave Delhi still unpopulated, because of its immensity, for it is one of the greatest cities in the world. It was in this state that we found it on our arrival, empty and unpopulated, save for a few inhabitants.