After reaching Tenmar forest at the end of "By the Light of the Moon" Yura will come and have a chat. Starting The Sweet Taste of Elsweyr Quest.
Find Ameir in the Waterways.
Make your way down to the water past the player home to find a really big door to the waterways. Follow the riverbed to the Khajiit camp.
Talk to Aleyt
It becomes pretty clear that the Khajiit don't really trust you but still you can learn a handful of information from them.
Speak with the large Kahjiit guarding the door.
This step will start the Quest Incursion
SetStage AnvilQuestameir 30 - stops the quest