[Machine] It is not part of the Sunnah of prayer, but he did it in order to complain, and the gift of Awfiyah cannot be used as evidence.
أَنَّهُ لَيْسَ مِنْ سُنَّةِ الصَّلَاةِ وَإِنَّمَا فَعَلَ ذَلِكَ مِنْ أَجْلِ أَنَّهُ يَشْتَكِي وَعَطِيَّةُ الْعَوْفِيُّ لَا يُحْتَجُّ بِهِ