blueprints,
The Gemara in Bava Metzia (42a) states “Rav Yitzchok says, a person should divide his money into thirds, and invest 1/3 in real estate (which is the most secure investment), 1/3 in inventory (to turn a business profit), and 1/3 should remain liquid so that it will be available in case merchandise is suddenly available to him at a bargain price”.
No mention of tzedakah.