What are the cross cultural things that Islam and Hinduism have adopted from each other?

What Hinduism has adopted

Inferiority of females, anti-homosexuality, females hair covering (to a degree), people less religiously flexible, polygamy, priests having more religious authority, stricter religious rules.

Hinduism is a flexible religion in general so it is open to adopt many things.

What Islam has adopted

Caste system

Islam is A by the book religion. Its followers cannot deviate from what the Quran says too much or they won’t be following Islam anymore.