Shah was accompanied by 20,000 Savaran-e Saltanati (royal guard), and 100 war elephants mounted by his Jazāyerchi. As the conqueror of Delhi entered, the city's fortification fired their guns in salute. The Persians received a sumptuous welcome in Muhammad Shah's palace. Sa'adat Khan was tasked by Nader to collect taxes from the citizens of Delhi and did his best to please the Shah in an attempt to ingratiate himself with his obsequious behaviour. However, when Sa'adat Khan sought an audience with Nader, the Shah chastised him harshly for not collecting the taxes with satisfactory speed. After Sa'adat Khan's humiliating defeat at Karnal, his open disloyalty to his emperor in the aftermath, his ignominious failure to curry favour with the person he believed was his new patron, forced to rob his own people of their wealth for a foreign invading host, he became burdened to such an extent that he died in Delhi no more than just a few days after his arrival in that city. Nader Shah was intent on establishing control through his new vassal, Muhammad Shah, and made clear his intent to keep him enthroned. As such, strict military discipline was maintained and a decree made any harassment of civilians punishable by mutilation. Nader found the Mughal aristocracy soft and weak. In an encounter with a Mughal minister, Nader enquired as to how many women he had in his harem, the minister answered 850. Nader quipped that he would add another 150 slave girls in order to promote him to the rank of minbashi (commander of a thousand). On 21 March Nader celebrated Nowruz, the Persian new year, and many generals and officers were given gifts and promotions. Mughal Uprising and sack of Delhi Rumours began spreading amongst the populace of Delhi that a gratuitous levy was imminent. There were also tales of Muhammad Shah seizing Nader and or having him killed one way or another. When a rumour broke out that Nader himself had been assassinated, a posse of Delhi citizens gathered around a granary as a group of Persian soldiers had been sent to negotiate prices, and the posse attacked and killed five Persian soldiers. The event sparked an uprising, and bands of civilians swept through the city and targeted isolated Persian soldiers in succession. When news was taken to Nader, he was dismissive, believing his soldiers were seeking out a pretext to ransack the city.