This paper is devoted to the analysis of the mutual influence between Sufism and the local religious cults in Northern India. It has been shown that the connections between different religions in Medieval India were quite intense. The major focus is the legacy of the 14th to 16th centuries’ poets belonging to the Chishtiyya brotherhood, whose works allow to see the result of the centuries-old coexistence of different religions in India. Particular attention is paid to the role of adherents of hatha yoga, the Naths, in the formation of the brotherhood doctrine. Evidence of the exchange of ideas can be found in a multitude of diverse sources related to both the Sufi environment and the Nathian one, such as the Fawaid-al-fuad, a collect...