CHAPTER FOUR –– THE BILL OF RIGHTS
Part 2—Rights and fundamental freedoms
51. Rights of persons detained, held in custody or imprisoned.
(3) Parliament shall enact legislation that––
(a) provides for the humane treatment of persons detained, held in custody or imprisoned ; and
(b) takes into account the relevant international human rights instruments.
Enforcement of sentences imposed
Treatment of prisoners - international treaty standards
Enforcement of national penalties - conditions of imprisonment
EDIT.