During the Revolution of 1905, Bigiev became actively involved in the founding of the Muslim political organization, and later party, Ittifaq al-Muslimin, starting with the first Congress of the Muslims of Russia, which was held in Nizhny Novgorod in August. He also participated in the second and third congresses of 1905 and 1906, where he was elected as a member of the central committee of the parliamentary group in the Duma. Bigiev was responsible for providing the protocols of the Ittifaq meetings.