Hanuman assumed Panchamukhi or five-faced form to eliminate Ahiravana, a strong rakshasa black-magician and practitioner from the dim arts over the Ramayana war. Ahiravana, brother of Ravana, had taken Lord Rama and Lakshmana to netherworld as captive, and the sole technique to kill him was to extinguish five lamps burning https://123-directory.com/listings13291956/beej-mantra-no-further-a-mystery