V. S. Apte, The Practical Sanskrit–English Dictionary. Look up any word of the Gita in Devanagari, IAST or Harvard-Kyoto, or browse the headwords letter by letter.
Entry शास्ति
शास्तिśāstif.Governing, ruling.
[शास्-क्तिन्]
Governing, ruling.
An order, a command.
Correction, chastisement, punishment, especially the punishment inflicted by command of the king.