Christianity: Assisted Suicide violates the commandment "Thou shalt not kill" [Suicide, (2004)]
Qu’ran: "’And do not kill yourselves, surely God is most Merciful to you.’ — Qur'an, Sura 4 (An-Nisa), ayat 29 [12].” [Qur’an (n.d.)]
Hinduism/Buddhism/Jainism: Assisted Suicide violates the code of ahimsa [a-HEM-sa] (Sanskrit for not to injure/ or more commonly known as non-violence).
Ghandi included selfish acts, and those driven by anger, hostility etc. to be included in the umbrella of violence. There is an emphasis on all existence being of a common nature and connected, such that harming others is equivocal to harming oneself. [Misra, G. (2009)]
Depending on the depth of your philosophy of Ahmisa, it could be argued that assisted suicide, under certain circumstances is nonviolent in nature, while others would consider it as bad as murder. In this way individual philosophy has a way of intensifying the issue at hand. But the take home message is that most major religions oppose assisted dying.
Misra, G. (2009). Non-violence: An imperative for a flourishing collective life. Psychological Studies, 54(3), 169-170. doi:10.1007/s12646-009-0023-4
Suicide (2004). Stanford Encyclopedia of Philosophy Retrieved From
http://plato.stanford.edu/entries/suicide/#ChrProQur'an (n.d.)
Quran.com Retrived from
http://quran.com/4