Section 24(5)(i) in The Central Government General Pool Residential Accommodation Rules, 2017
(i)if a wife or husband, as the case may be, who is an allottee of an accommodation under these rules, is subsequently allotted a residential accommodation at the same station from a pool to which these rules do not apply, she or he, as the case may be, shall surrender any one of the accommodation within one month of such allotment: