The Book of Purification
وَحَدَّثَنِي مُحَمَّدُ بْنُ الصَّبَّاحِ، حَدَّثَنَا إِسْمَاعِيلُ بْنُ زَكَرِيَّاءَ، عَنِ الأَعْمَشِ، بِهَذَا الإِسْنَادِ مِثْلَهُ وَلَمْ يَقُلْ فَلْيُرِقْهُ .This hadith has been transmitted by another chain of transmitters in which there is no mention of" throwing away
From Sahih Muslim, whose reports the scholars accept as authentic.