Why was haji shariat ullah movement was known as the faraiza movement?

The Haji Shariat Ullah movement, known as the Faraiza Movement, emerged in the 19th century in Bengal as a reformist initiative aimed at promoting Islamic practices and principles among the Muslim population. The term "Faraiza" refers to the obligatory duties prescribed in Islam, and Haji Shariat Ullah emphasized the importance of adhering to these duties, including prayers, fasting, and zakat (charity). The movement sought to counteract social injustices, superstitions, and the influence of local customs that deviated from Islamic teachings, ultimately striving for a return to pure Islamic practices.