Sunan an-Nasa'i, Hadith 4956 ⓘ
It was narrated from 'Amr bin Shuaib, from his father, that his grandfather said: "The price of a shield at the time of the Messenger of Allah was ten Dirhams."
أَخْبَرَنَا خَلاَّدُ بْنُ أَسْلَمَ، عَنْ عَبْدِ اللَّهِ بْنِ إِدْرِيسَ، عَنْ مُحَمَّدِ بْنِ إِسْحَاقَ، عَنْ عَمْرِو بْنِ شُعَيْبٍ، عَنْ أَبِيهِ، عَنْ جَدِّهِ، قَالَ كَانَ ثَمَنُ الْمِجَنِّ عَلَى عَهْدِ رَسُولِ اللَّهِ صلى الله عليه وسلم عَشْرَةَ دَرَاهِمَ .
also referenced under: Book 46, Hadith 86 (In-Book) & Volume 5, Book 46, Hadith 4959 (DarusSalam)