5.1.6.9 - The Essence of What the Seeker Needs (Mosul, 601/1205)
Also in Mosul this year, Shaykh Muhyiddin wrote the book of Kunhu ma-la-budda lil-Murid Minhu: the Essence of What the Seeker Needs, which a short guidance for the seeker that the Shaykh wrote in response to one question by one of his students.
This book has been printed in many editions and translated into English and Turkish.