Chaudhry Pervaiz Elahi, a top leader of the ruling PPP's key ally PML-Q, has been appointed as Pakistan's deputy prime minister.
Hamza was re-elected to the post by just three votes amidst high drama.
Khan was convicted in the Toshakhana case which was filed last year on the complaint of the Election Commission of Pakistan (ECP) which had earlier disqualified him in the same case.
TV footage showed Zardari coming out of his house and embracing his younger daughter Aseefa before getting into a black Landcruiser.
Fifteen lawmakers of the Pakistan Muslim League-Q, a key ally of the ruling Pakistan Peoples Party, were on Monday included in new Prime Minister Raja Pervez Ashraf's council of ministers.
Pakistan's new Prime Minister Raja Pervez Ashraf retained most key members of former premier Yousuf Raza Gilani's cabinet in the same positions as he allocated portfolios among his council of ministers.