This hadith has been transmitted by another chain of transmitters in which there is no mention of" throwing away".
وَحَدَّثَنِي مُحَمَّدُ بْنُ الصَّبَّاحِ، حَدَّثَنَا إِسْمَاعِيلُ بْنُ زَكَرِيَّاءَ، عَنِ الأَعْمَشِ، بِهَذَا الإِسْنَادِ مِثْلَهُ وَلَمْ يَقُلْ فَلْيُرِقْهُ .
Muslim
The Book of Purification • Hadith 115