Ahmed Shah Abdali was invited by the Muslims of Delhi to invade India. The rising power of the Sikhs and the Marathas coupled with the rapid disintegration of the Muslim hegemony in Hindusthan, had frightened the Muslims in India. For them, the alien Muslims were nearer to them than the native sons of the soil. (Letting these people the same rights as the Hindus was a big blunder and the Hindus had to pay all the sufferings that went with the creation of Pakistan and the tale has not ended as yet! - The Publisher.)
Ahmed Shah invaded Indian several times. In his first attempt, he was routed in the battle of Manpur on March 11, 1748 A.D. Then he invaded India twice: in 1750-51 and 1751-52 and again in 1757 A.D. In the last invasion he swooped down on Delhi and Mathura and indulged in the most savage massacres, orgies of rape, ravage of temples, plunder and forcible conversion to Islam. He left a trail of torture and destruction.
During Abdali's invasions of 1750-52 A.D. an Iranian fiend called Safdarjung (New Delhi has a locality named after him even today. What a shame! - The Publisher) was then the chief minister at the Delhi court. This scheming Iranian's treachery and lechery soon led to his ouster to distant Oudh, as the governor. At the time, Benares was under his control. Now that the Marathas were in power, they wanted to liberate the holy city. Safdrajung knew well that his forces were no match for the Marathas. He decided to hold the Hindu population ransom (a Muslim practice, which we can use vis =85 vis India's Muslims when threatened by Pakistan! - The Publisher.) and sent word to the Marathas that if they marched on Benares, all the Brahmins will be massacred. In their stupidity some terrorized residents of Benares sent a deputation to the Marathas requesting them not to attack Benares. By sheer bluff, Safdarjung could carry on with his unholy rule over the holy city!
Ahmed Shah, though emperor, limited his interests only to wine and women. He became so addicted to the pleasures of the flesh that he turned a four-square-mile area into a preserve of kidnapped beautiful women where no male other than Ahmed Shah was allowed to romp in like a stud-bull.
Now that Safdarjung was gone from the court, it was ruled by Ahmed Shah's mother (a kidnapped Hindu woman, Udham Bai) and her Muslim molester, Javed Khan. An ambitious courtier Imadul Mulk now came in. He raised Jahandar Shah's son Alamgir II to the throne in 1754 A.D. Ahmed Shah was imprisoned and blinded by order of the new emperor. But in reality, even Alamgir II was no king. He too was under the control of the chief minister Ghaziuddin; and the chief minister Ghaziuddin, in his turn, was a puppet of the Marathas who were in full control of Delhi.