6. Nothing in this article shall be invoked to delay or to prevent the abolition of capital punishment by any State Party to the present Covenant. Article 7 No one shall be subjected to torture or to cruel, inhuman or degrading treatment or punishment. In particular, no one shall be subjected without his free consent to medical or scientific experimentation. Article 8 1. 2. 3.  o one shall be held in slavery; slavery and N the slave-trade in all their forms shall be prohibited. No one shall be held in servitude. (a)  No one shall be required to perform forced or compulsory labour; (b)  Paragraph 3 (a) shall not be held to preclude, in countries where imprisonment with hard labour may be imposed as a punishment for a crime, the performance of hard labour in pursuance of a sentence to such punishment by a competent court; (c)  For the purpose of this paragraph the term “forced or compulsory labour” shall not include: (i) Any work or service, not referred to in subparagraph (b), normally required of a person who is under detention in consequence of a lawful order of a court, 9