—The condition of any furniture provided for use under the tenancy, or for use in any of the common parts (within the meaning given in paragraph 3), has deteriorated owing to ill-treatment by the tenant (or any one of joint tenants) or any person residing or lodging with him or any sub-tenant of his; and in the case of ill-treatment by a person lodging with a tenant or a sub-tenant of his the tenant has not, before the making of the order in question, taken such steps as he ought reasonably to have taken for the removal of the lodger or sub-tenant.