أَخْبَرَنَا عَلِيُّ بْنُ حُجْرٍ، قَالَ أَنْبَأَنَا شَرِيكٌ، عَنْ مَنْصُورٍ، عَنْ عَطَاءٍ، وَمُجَاهِدٍ، عَنْ أَيْمَنَ بْنِ أُمِّ أَيْمَنَ، يَرْفَعُهُ قَالَ لاَ تُقْطَعُ الْيَدُ إِلاَّ فِي ثَمَنِ الْمِجَنِّ " وَثَمَنُهُ يَوْمَئِذٍ دِينَارٌ
It was narrated that Ayman bin Umm Ayman who attributed it to the Prophet said:
"The (hand of) a thief is not to be cut off except for the price of a shield, and in those days the price of a shield was a Dinar."
Reference: Sunan an-Nasa'i 4948
In-book : Book 46, Hadith 78
English translation : Vol. 5, Book 46, Hadith 4951