After partition he left the Muslim League party amidst conflicts with
Mian Mumtaz Daultana and briefly joined the Pakistan Azad Party along with
Mian Iftikharuddin. Between the 1950s and 1970s, in his own words, he was 'an unlucky witness to the gradual destruction of the Quaid's (i.e.
Jinnahs) Pakistan', at the hands of greedy and corrupt politicians and the
martial law regimes. Elected again from Attock in the 1970 general elections, he played a key role in the opposition negotiations with
Zulfikar Bhutto which led to the passage of Pakistan's first interim constitution. He was also one of the few Pakistani statesmen in 1970–71, who tried to negotiate amicably with the
Awami League, to try to salvage former East Pakistan, which seceded and became
Bangladesh soon afterwards. Disillusioned, Khan soon afterwards resigned permanently from political life. He died in
Islamabad on 25 September 1998 and is survived by two sons and four daughters. His son Sikander Hayat Junior has twice fought provincial elections from the PPP. ==Authorship==