Once a person has not voluntarily accepted a contractual obligation and further there subsists no legal obligation to pay qua such contractual claim at a particular time, it cannot be said that the person incurred any liability to pay at that point of time so as to make him eligible for deduction on that count. Notwithstanding the fact that obligation relates to an earlier year, the liability to pay arises only in the later year, when a final enforceable obligation to pay is settled against that person. In our considered opinion, there is no qualitative difference between the two situations, viz., first, in which no enforceable liability to pay is created in the first instance, and second, in which though the enforceable liability was initially created but the same stands wiped out by the stay on the operation of such enforceable liability. In both the situations, claimant remains without any legal right to recover the amount and equally the opposite party without any legal obligation to pay the same