Subject to this section and the next, the proof of any bankruptcy debt by a secured or unsecured creditor of the bankrupt and the admission or rejection of any proof shall take place in accordance with the rules.
Where a bankruptcy debt bears interest, that interest is provable as part of the debt except in so far as it is payable in respect of any period after the commencement of the bankruptcy.
The trustee shall estimate the value of any bankruptcy debt which, by reason of its being subject to any contingency or contingencies or for any other reason, does not bear a certain value.
Where the value of a bankruptcy debt is estimated by the trustee under subsection (3) or, by virtue of section 303 in Chapter III, by the court, the amount provable in the bankruptcy in respect of the debt is the amount of the estimate.