dog in the manger

Translations
собака на сене
Someone is acting like a dog in the manger, not using the resources but not letting others use them either.
Кто-то ведёт себя как собака на сене, не используя ресурсы, но и другим не давая ими пользоваться.
Definitions
A person who prevents others from having something they do not want or need themselves, often out of spite or jealousy.