"Outlander! I know you serve the caliph, and he trusts you. I want to ask you about something, too. It is a secret, important and dangerous assignment. Are you willing to help?
The enemies of the caliph are forever plotting. They have been writing to an external enemy, and any wild beasts might serve as their messengers. All are under suspicion - such a letter could hide among the spines of a Needlehide, in the roots of a Wandering Mandrake or in the stomach of a Whad Worm. So destroy anything you find, outlander, and deliver any messages you find to me. I’ll be waiting!"
Kill 20 monsters to receive enemy correspondence.
You have to kill 20 monsters AND find the item, then you can return to Jasmin.
[..] *Casts a quick yet attentive glance at the papers you brought.*
"Great, that’s what I was counting on. Thank you. I wasn’t wrong about you, you’re clearly fit for this sort of service. Come back tomorrow."