Hazrat Hakeemul Ummat Mawlana Ashraf Ali Thanawi ra included his commentary on sixth (last) volume of Masnavi of Hazrat Mawlana Jalalud din Rumi ra in the curriculum (nisab e tasawwuf) he recommended for the salikeen under his tarbiyah.
He provided the following reason for this choice;
“It is because I heard from Sayyidi murshidi (Hazrat Haji Imdadullah mohajir Makki ra) that there are more esoteric and deeper meanings in it. A couplet in the very beginning of this volume also points towards this. Some commentators (of masnavi) have reported this explicitly from Hazrat Mawlana Rumi ra that each forthcoming volume is superior in the deeper meanings conveyed from its preceding volume.”
Kaleed e masnavi, volume 21, page 1, Idara e talifat e Ashrafia, Multan, Pakistan.
Kaleed e Masnavi is complete commentary of Masnavi of Mawlana Jalaluddin Rumi ra. It is Urdu language. Published in 24 volumes by Idara e talefat e Ashrafiya, Multan, Pakistan. Each voulume has between 300 to 500 pages.