Tawarruk (Sitting On On'e Buttock) In The Fourth Rak'ah Sunan Abi Dawud 965

Arabic hadith text
حَدَّثَنَا قُتَيْبَةُ، حَدَّثَنَا ابْنُ لَهِيعَةَ، عَنْ يَزِيدَ بْنِ أَبِي حَبِيبٍ، عَنْ مُحَمَّدِ بْنِ عَمْرِو بْنِ حَلْحَلَةَ، عَنْ مُحَمَّدِ بْنِ عَمْرٍو الْعَامِرِيِّ، قَالَ كُنْتُ فِي مَجْلِسٍ بِهَذَا الْحَدِيثِ قَالَ فِيهِ فَإِذَا قَعَدَ فِي الرَّكْعَتَيْنِ قَعَدَ عَلَى بَطْنِ قَدَمِهِ الْيُسْرَى وَنَصَبَ الْيُمْنَى فَإِذَا كَانَتِ الرَّابِعَةُ أَفْضَى بِوَرِكِهِ الْيُسْرَى إِلَى الأَرْضِ وَأَخْرَجَ قَدَمَيْهِ مِنْ نَاحِيَةٍ وَاحِدَةٍ ‏.‏
Translation
Muhammad b. ‘Amr al-Amir said

I was in a gathering with this hadith. It stated therein: When he sat in the two rak'ahs, he sat on the sole of his left foot and erected the right one, and when it was the fourth rak'ah, he brought his left hip down to the ground and brought both of his feet out from one side.