You can download Labbaik ( Urdu لبیک) by Mufti Mumtaz free in pdf format.
About Mufti Mumtaz
Mumtaz Mufti (Urdu: ممتاز مفتی) was a writer from Pakistan. Mumtaz Mufti started writing Urdu short stories while working as a school teacher before 1947. In the beginning of his literary career, he was considered, by other literary critics, a non-conformist writer having liberal views, who appeared influenced by Freud. His transformation from Liberalism to Sufism was due to his inspiration from a fellow writer Qudrat Ullah Shahab. All the same, he did manage to retain his individual point of view and wrote on subjects which were frowned upon by the conservative elements in the society.