Jami` at-Tirmidhi, Volume 3, Book 12, Hadith 1236 (DarusSalam) ⓘ
Narrated Ibn 'Umar: "The Messenger of Allah prohibited selling the Wala' and conferring it." [Abu 'Eisa said:] This Hadith is Hasan Sahih. We do not know of it except as a narration of 'Abdullah bin Dinar, from Ibn 'Umar. This Hadith is acted upon according to the people of knowledge. Yahya bin Sulaim reported this Hadith from 'Ubaidullah bin 'Umar, from Nafi' from Ibn 'Umar from the Prophet, saying "That he prohibited selling the Wala' and conferring it." But this is mistake from Yahya bin Sulaim. Because 'Abdul Wahhab Ath-Thaqafi, 'Abdullah bin Numair and others reported it from 'Ubaidullah bin 'Umar, from Ibn 'Umar, from the Prophet. And this is more correct than the narration of Yahya bin Sulaim.
حَدَّثَنَا مُحَمَّدُ بْنُ بَشَّارٍ، حَدَّثَنَا عَبْدُ الرَّحْمَنِ بْنُ مَهْدِيٍّ، قَالَ حَدَّثَنَا سُفْيَانُ، وَشُعْبَةُ، عَنْ عَبْدِ اللَّهِ بْنِ دِينَارٍ، عَنِ ابْنِ عُمَرَ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم نَهَى عَنْ بَيْعِ الْوَلاَءِ وَهِبَتِهِ . قَالَ أَبُو عِيسَى هَذَا حَدِيثٌ حَسَنٌ صَحِيحٌ لاَ نَعْرِفُهُ إِلاَّ مِنْ حَدِيثِ عَبْدِ اللَّهِ بْنِ دِينَارٍ عَنِ ابْنِ عُمَرَ . وَالْعَمَلُ عَلَى هَذَا الْحَدِيثِ عِنْدَ أَهْلِ الْعِلْمِ . وَقَدْ رَوَى يَحْيَى بْنُ سُلَيْمٍ هَذَا الْحَدِيثَ عَنْ عُبَيْدِ اللَّهِ بْنِ عُمَرَ عَنْ نَافِعٍ عَنِ ابْنِ عُمَرَ عَنِ النَّبِيِّ صلى الله عليه وسلم أَنَّهُ نَهَى عَنْ بَيْعِ الْوَلاَءِ وَهِبَتِهِ . وَهُوَ وَهَمٌ وَهِمَ فِيهِ يَحْيَى بْنُ سُلَيْمٍ . وَرَوَى عَبْدُ الْوَهَّابِ الثَّقَفِيُّ وَعَبْدُ اللَّهِ بْنُ نُمَيْرٍ وَغَيْرُ وَاحِدٍ عَنْ عُبَيْدِ اللَّهِ بْنِ عُمَرَ عَنْ عَبْدِ اللَّهِ بْنِ دِينَارٍ عَنِ ابْنِ عُمَرَ عَنِ النَّبِيِّ صلى الله عليه وسلم . وَهَذَا أَصَحُّ مِنْ حَدِيثِ يَحْيَى بْنِ سُلَيْمٍ .
also referenced under: Hadith 1236 (Reference) & Book 14, Hadith 36 (In-Book)