The Emperor Was delighted with Tulsidas and offered the Hanuman temple by having an Islamic crescent Moon finial which adorns the temple spire. It is also claimed that because of the crescent moon symbol around the spire, the temple was not ruined through the Muslim rulers who invaded India at https://hanumanmandiradelaide.com.au/the-bond-between-neem-karoli-baba-maharaj-ji-and-hanuman-ji/