What is the principle that states all that you put into the lives of others comes back into your own?

According to Osho, this is the law of oneness—the “higher economics” of existence: because no one is separate, whatever you give to others inevitably returns to you, often multiplied. Hurt another and you hurt yourself; bless another and blessings shower back. Hence love your neighbor and even your enemy, and share your joy unconditionally—the more you give, the more life gives you.