तौ हि द्विकार्यसाधकौ वश्यौ च भवतः ॥ कZ_०७.५.४४ ॥
tau hi dvikāryasādhakau vaśyau ca bhavataḥ
因为那两者能达成双重目的,并且仍然易于受你控制。
It marks an asset as delivering two outcomes at once (e.g., gaining advantage while also keeping the counterpart bound), making them efficient instruments of policy.
Because assets that cannot be controlled become future liabilities—leaks, defections, or independent power centers.