Question

Name the book which gives the ruler of the Buddhist sangha

Answer 1

The ​rules made  for Buddhist  sangha  were  written down in a book known as  Vinaya Pitaka

Answer 2

Vinaya Pitaka.

The Vinaya Pitaka is a Buddhist document, which is one of the three components that formed the Tripitaka.The additional two parts of the Tripitaka are the Abhidhamma Pitaka and the Sutta Pitaka. Its important theme of the Vinaya Pitaka is the ethical practices for monks and nuns of the Buddhist Sangh.