Ishaq was born in 1883 CE to a Bengali Muslim family in Feni, Noakhali District, Bengal Presidency.[1] He received his primary religious education from the local religious institution. Then he got admitted into an 'alim course in Comilla.[1] Later, he travelled to Makkah where he got admitted into the Madrasah as-Sawlatiyah.[1] He studied Islamic studies and Arabic for eleven years in that institution, under Shaykhu'd-Dal'ail Abdul Haqq Muhajir Makki who treated him like his adopted son.[1] Later, he was appointed as a teacher of that madrasa. He got khilafat from his teacher and returned to his own country.[1]
In 1936, Ishaq established the Ishaqiya Orphanage in Daganbhuiyan, Feni.[2] He donated all of his immovable properties to this orphanage.[1] Ishaq also gave financial help to establish mosques, eidgahs and madrasas.
Ishaq wrote an Urdu book titled Ta'lim-e-Haqqani Wa Fuyud-e-Ishaqi.[1] In that book he described Sufi problems, zikr and mediation. He kept himself away from active politics but supported the independence movement of Jamiat Ulema-e-Hind.[1]