Following Timur's 1398 Sack of Delhi, he appointed Khizr Khan as deputy of Multan (Punjab). Khizr Khan captured Delhi on 28 May 1414 thereby establishing the Sayyid dynasty. Khizr Khan did not take up the title of Sultan and nominally, continued to be a Rayat-i-Ala (vassal) of the Timurids - initially that of Timur, and later his grandson Shah Rukh. Khizr Khan was succeeded by his son Sayyid Mubarak Shah after his death on 20 May 1421. The last ruler of the Sayyids, Ala-ud-Din, voluntarily abdicated the throne of the Delhi Sultanate in favour of Bahlul Khan Lodi on 19 April 1451, and left for Badaun, where he died in 1478.