Buddhists place great emphasis on non-violence and compassion for all life. The first precept requires all individuals to abstain from injuring and killing any living creature. Buddhists believe capital punishment will have compromising effects on the souls of both the offender and the punisher. Buddhists believe that inhumane treatment of an offender does not solve their misdeeds.
"The more evil that comes from him, the more good will go from me." The buddha
Hinduism opposes killing, violence and revenge. This is in line with the principle of Ahimsa (non-violence). Hindus views on capital punishment are similar to the Buddhist views above.
" An eye for an eye ends up making the whole world blind." Ghandi
The death penalty is accepted in Islam but forgiveness is preferred. Muslims believe that capital punishment is a most severe sentence but it may be commanded by a court for crimes if a suitable severity. They believe that there will be more profound punishments at the hands of God but there is also room for an earthly punishment.
"Take not life, which God has made sacred, execpt by way of justice and law" Qur'an 6:15