Reciting Tales within the Ramayana or the Sundara Kanda (a chapter on the Ramayana devoted to Hanuman’s exploits) is a common devotional follow that reinforces the values he signifies. सप्तैतान् संस्मरेन्नित्यं मार्कण्डेयमथाष्टमम्। In hanuman chalisa the siddhi word signifies that person has attained these qualities by creating himself into excellent self or atman. According to Hindu https://youtube.com/shorts/5QIVn-fWAkw