Hanuman was a single of these four monkeys. This monkey group was instrumental in offering Rama critical information regarding Sita. They helped him produce a bridge across the seas, and cross above with a monkey army that productively stormed the demon stronghold and freed Sita. भस्मसादभवदैत्यो दुष्टचेष्टितमन्तकृत् ॥ २३ ॥ https://world-famous-vashikaran-s97395.wikigdia.com/7397721/about_yantra