The Hanuman Chalisa is a devotional hymn dedicated to Lord Hanuman, a revered figure in Hindu mythology known for his strength, devotion, and loyalty. It is believed to have been composed by the saint Tulsidas in the 16th century. The Hanuman Chalisa consists of 40 verses written in the Awadhi language and is chanted or recited by devotees as a form of prayer and devotion to Lord Hanuman.