Not to do any evil, to cultivate good, to purify one's mind, this is the Teaching of the Buddhas. 諸惡莫作，眾善奉行；自淨其意，是諸佛教
Where is nibbāna
When the Vererable Sāriputta, the chief disciple of the Buddha, was asked by the devotee Jabukhādaka, “Nibbāna, nibbāna, is the saying, friend, Sāriputta. What is nibbāna?” Sāriputta replied, the destruction of lust, the destruction of hatred, the destruction of delusion, friend, is called nibbāna.” It is also called the cessation of defilements (kilesa-nibbāna). There, it is said, in Theravada Buddhism, that it is possible to experience the bliss of nibbāna here and now, in this very life. There is no need to wait until you die.