The Emperor Was happy with Tulsidas and offered the Hanuman temple using an Islamic crescent Moon finial which adorns the temple spire. It is usually claimed that due to crescent moon image over the spire, the temple wasn't ruined because of the Muslim rulers who invaded India at many situations. https://hanumanmandiradelaide.com.au/how-to-do-pooja-on-hanuman-jayanti-a-step-by-step-guide-for-a-meaningful-celebration/