CommitmentCommitmentContractual agreement between Fannie Mae and the Lender where Fannie Mae agrees to buy a Mortgage Loan from the Lender at a future date in exchange for an MBS, or at a specific price for a Cash Mortgage Loan, and the Lender agrees to Deliver that Mortgage Loan to Fannie Mae. to purchase a permanent Mortgage LoanMortgage LoanMortgage debt obligation evidenced, or when made will be evidenced, by the Loan Documents or a mortgage debt obligation with a Fannie Mae credit enhancement. for a to-be constructed or rehabilitated PropertyPropertyMultifamily residential property securing the Mortgage Loan and including the land (or Leasehold interest in land), Improvements, and personal property (as defined in the Uniform Commercial Code). per Part XV of the DUS GuideDUS GuideMultifamily Selling and Servicing Guide and Delegated Underwriting and Servicing Guide, including any exhibits, appendices, or other referenced forms, as updated, amended, restated, modified, or supplemented by any lender memo; provided, however, if a topic is covered in the Multifamily Selling and…, subject to certain conditions.