Imam al-Shafi'i (may Allah have mercy on him) said: This is an opinion of Abdullah bin Amr (may Allah be pleased with them both) in the narration of Amr bin Shu'ayb. Shields, in former times and recent, are goods whose price may be ten, a hundred, or two dirhams. So when the Prophet (peace and blessings be upon him) cut off the hand for a quarter of a dinar, it would be cut off for more than that too. And you claim that Amr bin Shu'ayb is not one whose narration is accepted, and you reject against us Sunnahs that he narrated which agree with our views, saying: He erred. So how can you reject his narration at one time, and then use him as a proof against the people of memorisation and truthfulness, even though he did not narrate anything that contradicts our view?
Hadith Referenceالسنن الكبرى للبيهقي / كتاب السرقة / 17178