Here, it will be appropriate to cite a tradition reported from Amir al‑Mu'minin in Bihar al‑'Anwar (vo1.2, chapter 34, p.284; also see Nahj al‑balaghah, Khutbah No.18):
ترد على أحدهم القضية في حكم من الأحكام، فيحكم فيها برأيه، ثم ترد تلك القضية بعينها على غيره، فيحكم فيها بخلاف قوله، ثم يجتمع القضاة بذلك عند الإمام الذي استقضاهم فيصوب آراءهم جميعاً - والههم واحد! وكتابهم واحد! أفأمرهم الله - سبحانه - بالاختلاف فأطاعوه! أم نهاهم عنه فعصوه! أم أنزل الله ديناً ناقصاً فاستعان بهم على إتمامه! ام كانوا شركاء له، فلهم ان يقولوا، وعليه أن يرضى!؟ أم أنزل ديناً تاماً فقصر الرسول (ص
عن تبليغه وأدائه، والله سبحانه يقول: ((ما فرطنا في الكتاب من شيء
) وفيه تبيان لكل شيء، وذكر أن الكتاب يصدق بعضه بعضاً، وانه لااختلاف فيه فقال سبحانه ((ولو كان من عند غير الله لوجدوا فيه اختلافاً كثيراً
).
When a case relating to one of the ahkam is put before any one of them he passes judgement on it according to his ray. Afterwards, when the same problem is placed before another of them, he passes an opposite verdict. Then these judges go to the chief who had appointed them and he confirms all the verdicts, although their God is One, their prophet is one and the same and their scripture is one and the same.
Was it God‑subhanahu‑who enjoined them to differ (while laying down the ahkam), and they obeyed Him? Or He forbade them from it and they disobeyed Him? Or, did God Almighty send His Din in a defective and imperfect form and asked for their help and assist*ance in order to make it perfect?
Or, were they His partners and assistants (in performing legislation) so that He has to concede to whatever judgement they pronounce? Or is it that God Almighty made His Din perfect, but the Prophet (S) fell short of communicating it (to the people)?
The fact is that God states in the Quran:
مَا فَرَّطْنَا فِي الْكِتَابِ مِنْ شَيْءٍ ۚ
We have not neglected anything in the Book, (6:38)
تِبْيَانًا لِكُلِّ شَيْءٍ
and that in it is all things, (16:89)
and that one part of the Quran verifies another part and that there is no contradiction in it. And the Almighty has said:
وَلَوْ كَانَ مِنْ عِنْدِ غَيْرِ اللَّهِ لَوَجَدُوا فِيهِ اخْتِلَافًا كَثِيرًا
If it had been from other than God they would have found therein much incongruity, (4:82).