Let us discuss this from a logical angle while considering our argument. Generally such high value items are always advised to be transacted through acocunt payee cheque. Since in your case, the asset is procurred through cash payment exceeding Rs 20,000, you are exposed to the risk of attracting the provisions of sec 40A (3) unless you can justify for the circumstances necessitating the payment otherwise than by account payee cheque. You may refer to Rule 6DD for the cases and circumstances for no disallowance. Since the amount paid would be disallowed not allowing it as an expense,you can argue that the amount otherwise is being treated as 'capital item' and hence the depreciation on the amount capitalised can be argued to be sustainable. You can refer case laws for the same. The reasoning you may adopt is suppose hypothetically,in the year you claim business having commenced commercially, hence the loss should be allowed as a business loss, but suppose assessing officer disagrees to the same and does not allow the loss, then the expenses are capitalised on the gound of being treated as preoperative expenses.