I heard Abu Abdillah Ja’far ibn Muhammad, peace be upon him, say: "Whenever I came across any judgement given by ‘Ali, peace be upon him, I always found it based on the principle of (Prophet’s) tradition." Then he said: ‘Ali used to say: "If two disputants brought a case to me and I gave my judgement, and then if they came with the same case to me after years, I would give the same judgement, because judgement never expires nor does it disappear."