Fidyah
Fidyah is with regards to fasting only. It is a form of compensation for not being able to fast during the holy month of Ramadhan, due to illness or pregnancy, by feeding needy persons.
For more details about Fidyah please see the following resources: Islamic Law A, Islamic Law B, and Islamic Law C.
$5.00 (US) is the minimum amount required for I.M.A.M. to implement this service.