The Book of Pilgrimage
15/88. Chapter:
Al-Madinah eliminates its Dross and it is also called Tabah, and Taibah
Sahih Muslim
وَحَدَّثَنَا عَمْرٌو النَّاقِدُ، وَابْنُ أَبِي عُمَرَ، قَالاَ حَدَّثَنَا سُفْيَانُ، ح وَحَدَّثَنَا ابْنُ الْمُثَنَّى، حَدَّثَنَا عَبْدُ الْوَهَّابِ، جَمِيعًا عَنْ يَحْيَى بْنِ سَعِيدٍ، بِهَذَا الإِسْنَادِ وَقَالاَ " كَمَا يَنْفِي الْكِيرُ الْخَبَثَ " . لَمْ يَذْكُرَا الْحَدِيدَ .
This hadith has been narrated by Yabya b. Sa'id with the same chain of transmitters (and the words are): " Just as a furance removes impurity," but no mention is made of iron.
Reference : Sahih Muslim 1382bIn-book reference : Book 15, Hadith 558USC-MSA web (English) reference : Book 7, Hadith 3190