In the war between Rama and Ravana, Lakshmana fell unconscious from Meghnad's weapon. The physician Sushena said his life could be saved only if the Sanjeevani herb from the Himalayas arrived before sunrise. In an instant Hanuman reached the Himalayas.
Many herbs were glowing on Mount Dronagiri, and so as not to waste time identifying the Sanjeevani, Hanuman lifted the whole mountain and carried it back. Lakshmana was revived, and Shri Rama embraced Hanuman and said: "You are as dear to me as Bharata."
After the coronation, Sita gave Hanuman a pearl necklace. Hanuman began breaking open each pearl, searching for something inside. When asked why, he said: "Anything in which my Lord is not present is of no use to me." Then he tore open his chest, and there Sita and Rama were seen.
By Shri Rama's blessing, Hanuman is immortal. The Hanuman Chalisa, composed by Goswami Tulsidas, is sung in homes everywhere today: "Bhoot pishach nikat nahi aave, Mahavir jab naam sunave" (No ghost or evil spirit comes near when the name of the mighty hero is spoken). Devotees worship him with special devotion on Tuesdays and Saturdays.