What information did Sir Richard Burton gather in the bazaars of Sindh for Sir Charles James Napier?

While serving as an intelligence officer in Sindh, Sir Richard Burton gathered sensitive information by disguising himself as a Muslim merchant to infiltrate local bazaars.1

At the request of Sir Charles James Napier, the commander of English forces, Burton specifically investigated the existence and operations of homosexual brothels in Karachi. Burton produced an explicit report detailing these findings, which led to the destruction of the establishments. However, the nature of this report later caused significant professional turmoil for Burton when it was forwarded to authorities in Bombay by an officer seeking to damage his career.1