"The Prophet did not cut off the (hand of) the thief except for the value of a shield, and the value of a shield in those days was a Dinar." (Daif) (Using translation from Nasāʾī 4943)
لَمْ يَقْطَعِ النَّبِيُّ ﷺ السَّارِقَ إِلَّا فِي ثَمَنِ الْمِجَنِّ قَالَ وَثَمَنُ الْمِجَنِّ يَوْمَئِذٍ دِينَارٌ