The Emperor Was delighted with Tulsidas and offered the Hanuman temple using an Islamic crescent Moon finial which adorns the temple spire. It's also claimed that due to crescent moon image around the spire, the temple wasn't destroyed via the Muslim rulers who invaded India at a variety of occasions. https://sankat-mochan-hanuman04442.blogvivi.com/43145142/what-does-hanuman-ji-mean