The Emperor Was happy with Tulsidas and offered the Hanuman temple with the Islamic crescent Moon finial which adorns the temple spire. Additionally it is claimed that due to crescent moon image around the spire, the temple was not wrecked via the Muslim rulers who invaded India at several times. https://hanumanmandirwellington.org.nz/why-is-hanuman-mandir-wellington-popular-among-devotees/