Some Buddhists do not recognize the idea behind sin because of the Buddhist "Cause-Effect Theory", known as Karma. In general, Buddhism illustrates intentions as the cause of Karma, either good, bad, or neutral. Furthermore, most thoughts in any being's mind can be negative. In Buddhism there is no sin apart from ignorance Avidyā (Buddhism).
The ethnologist Christoph von Fürer-Haimendorf explained,
In Buddhist thinking the whole universe, men as well as gods, are subject to a reign of law. Every action, good or bad, has an inevitable and automatic effect in a long chain of causes, an effect which is independent of the will of any deity. Even though this may leave no room for the concept of 'sin' in the sense of an act of defiance against the authority of a personal god, Buddhists speak of 'sin' when referring to transgressions against the universal moral code. (1974: 550)
Vipaka. It is a common Buddhist belief that the result of your Karma, may create low quality living, hardships, destruction and all means of disharmony in life and it may also create healthy living, easiness, and harmony in life. Good deeds produce good results while bad deeds produce bad results. Karma and Vipaka are your own action and result.
Pañcasīla (Pāli) is the fundamental code of Buddhist ethics, willingly undertaken by lay followers of Gautama Buddha. It is a basic understanding of the Noble Eightfold Path, which is a common Buddhist teaching on ways to stop suffering.
These ultimately is thought by some to lead to cessation of suffering and thus is a way to be free of Samsara, the cycle of death. After that, Nirvana is achieved.