Law 20 of The 48 Laws of Power by Robert Greene is "Do Not Commit to Anyone". The law advises against committing to a person or group, as it can limit your options and make you vulnerable to manipulation or betrayal. Instead, it suggests maintaining your independence and keeping your options open. 

The law's principle is to foster self-sufficiency and adaptability. By not committing too closely to a person or group, you can open up many opportunities. You can also maintain a superior bargaining position when multiple parties are vying for your support. 

https://www.amazon.com/48-Laws-Power-Robert-Greene/dp/0140280197