It is believed that this trip took place somewhere between 1818 and 1820. Shariatullah believed that his efforts of purifying Islam in Bengal had met failure because he had not formally requested permission from his teacher Tahir al-Sumbal Makki for moving ahead with this step in his life. This is clearly indicative of the impact his teachers had on his life, and the high degree of respect he had for them. It is also reported but has never been confirmed that a turning point in his struggles for purifying Islam was a dream that he had of Prophet Muhammad during this stay. According to the unconfirmed accounts, Shariatullah was encouraged in the dream to purify Islam in his homeland. As a result, he returned to Bengal in circa 1821 with much more enthusiasm and passion than during his prior visit.