Sunan Abi Dawud 21253
In-book no 749حَدَّثَنَا الْحَسَنُ بْنُ عَلِيٍّ، حَدَّثَنَا مُعَاوِيَةُ، وَخَالِدُ بْنُ عَمْرٍو، وَأَبُو حُذَيْفَةَ قَالُوا حَدَّثَنَا سُفْيَانُ، بِإِسْنَادِهِ بِهَذَا قَالَ فَرَفَعَ يَدَيْهِ فِي أَوَّلِ مَرَّةٍ وَقَالَ بَعْضُهُمْ مَرَّةً وَاحِدَةً .
This tradition has also been transmitted by Sufyan through a different chain of narrators. This version has: He raised his hands once in the beginning. Some narrated: (raised his hands) once only.