Sahih Muslim 430
Sahih Muslim · Book 4: The Book of Prayers · The Command To Be Calm During The Prayer And The Prohibition Of Gesturing With One's Hand And Raising It When Saying The Salam; And Completing The First Rows, Aligning In Them, And The Command To Come Together
وَحَدَّثَنِي أَبُو سَعِيدٍ الأَشَجُّ ، حَدَّثَنَا وَكِيعٌ ، ح وَحَدَّثَنَا إِسْحَاقُ بْنُ إِبْرَاهِيمَ ، أَخْبَرَنَا عِيسَى بْنُ يُونُسَ ، قَالاَ جَمِيعًا حَدَّثَنَا الأَعْمَشُ ، بِهَذَا الإِسْنَادِ نَحْوَهُ .
This hadith has been narrated by A'mash with the same chain of transmitters.