336. Destruction of premises.

If the lease contains a covenant by the tenant to repair, without exception of damage by fire or other exceptional cause, he is bound to rebuild or repair the premises should they be destroyed or injured during the term1. In the absence of words expressly or impliedly fixing a time for the performance of the covenant, the tenant has such time as is reasonable in all the circumstances of the case for performance of the covenant, whether this time does or does not extend beyond the term of the tenancy2.

If the tenant's liability on the covenant requires him only