260. Authorised deductions and set-off.

If the landlord brings a claim for rent, and a claim by the tenant to a sum of money (whether of an ascertained amount or not) is relied upon as a defence to the whole or part of the landlord's claim, the tenant's claim may be included in the defence and set off against the landlord's claim, whether as a counterclaim or an additional claim1. The claim may be set off only if it is connected with the same transaction or property, but it is not necessary for the claim to have arisen under the lease itself; thus a