Hafiz Hussain Ahmed rejoined the Jamiat Ulema-e-Islam (JUI-F) unconditionally in the presence of Maulana Fazal-Ur-Rehman, reported 24NewsHD TV channel on Saturday.
Hafiz Hussain Ahmed was expelled from JUI-F two years ago for violating the party policy.
He had been elected MNA twice and once senator on JUI-F ticket.