Kautilya's Arthashastra 9.4.9

9.4.9

ity ādeyapratyādeyau vyākhyātau //

When he, however, thinks that "by taking a repayable profit I shall cause my enemy’s treasury, army, and other defensive resources to dwindle; I shall exploit to impoverishment the mines, timber and elephant forests, irrigational works and roads of traffic of my enemy; I shall impoverish his subjects, or cause them to migrate, or conspire against him; when they are reduced to this condition, my enemy inflames their hatred (by punishing them); or I shall set my enemy against another enemy; my enemy will give up his hopes and run away to one who has some blood-relationship with him; or having improved his lands, I shall return them to him, and when he is thus brought to ascendancy, he will be a lasting friend of mine,"--then he may take even a repayable profit. Thus receivable and repayable profits are explained.