Inside, she mixes oil and perfumed oil, indeed. This reveals the crooked cunning of Suraiya.

This couplet speaks about a subtle form of deception. It compares a tricky act to mixing perfumed oil, suggesting that something appears pleasant or attractive on the surface, but hides a deceitful intent underneath. It's like someone is making something seem good or appealing, perhaps with sweet words or an innocent facade, but their true motive is cunning and dishonest. The phrase "Suraiya's cunning" points to a notorious kind of trickery, implying that this act is a prime example of such clever but dishonest behavior. It warns us to look beyond the pleasant exterior and recognize the hidden agenda.