The Permissibilty of Tamattu' Sahih Muslim 1226 b

Arabic hadith text
وَحَدَّثَنَاهُ إِسْحَاقُ بْنُ إِبْرَاهِيمَ، وَمُحَمَّدُ بْنُ حَاتِمٍ، كِلاَهُمَا عَنْ وَكِيعٍ، حَدَّثَنَا سُفْيَانُ، عَنِ الْجُرَيْرِيِّ، فِي هَذَا الإِسْنَادِ وَقَالَ ابْنُ حَاتِمٍ فِي رِوَايَتِهِ ارْتَأَى رَجُلٌ بِرَأْيِهِ مَا شَاءَ ‏.‏ يَعْنِي
Translation
This hadith been narrated on the authority of Jurairi with the same chain of transmitters, and Ibn Hatim said in his narration

" A person said according to his personal opinion, and it was Umar."