In Arabic it is called Shirkat-ul-Mutanaqisa. Diminishing Musharaka is just a Musharaka with an additional feature of decreasing ownership of one party. This differs from normal Musharaka, where ownership ratio does not change.
FHM offers Diminishing Musharaka on basis of Shirkat-ul-MilkThe arrangement is composed of the following key activities1. To create joint ownership in Musharaka asset.2. Giving share of the FHM to client.3. Promise of client to purchase units/share of the FHM.4. Purchase of the FHM's units.5. Adjustment of profit according to share of the FHM in Musharaka asset.