Tirmidhi Book 21, Hadith 1595

حَدَّثَنَا أَبُو عَمَّارٍ، حَدَّثَنَا وَكِيعٌ، عَنْ الْأَعْمَشِ، عَنْ أَبِي صَالِحٍ، عَنْ أَبِي هُرَيْرَةَ، قَالَ:‏‏‏‏ قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ:‏‏‏‏ ثَلَاثَةٌ لَا يُكَلِّمُهُمُ اللَّهُ يَوْمَ الْقِيَامَةِ وَلَا يُزَكِّيهِمْ، ‏‏‏‏‏‏وَلَهُمْ عَذَابٌ أَلِيمٌ:‏‏‏‏ رَجُلٌ بَايَعَ إِمَامًا، ‏‏‏‏‏‏فَإِنْ أَعْطَاهُ وَفَى لَهُ، ‏‏‏‏‏‏وَإِنْ لَمْ يُعْطِهِ لَمْ يَفِ لَهُ ، ‏‏‏‏‏‏قَالَ أَبُو عِيسَى:‏‏‏‏ هَذَا حَدِيثٌ حَسَنٌ صَحِيحٌ، ‏‏‏‏‏‏وَعَلَى ذَلِكَ الْأَمْرُ بِلَا اخْتِلَافٍ.

Narrated Abu Hurairah: That the Messenger of Allah (ﷺ) said: Three will not be spoken to by Allah on the Day of Judgement, nor will they be purified, and for them is a painful torment: A man that gave a pledge to an Imam, and if he gives to him he fulfills it, and if he does not give to him he does not fulfill not fulfill it. [Abu 'Eisa said:] This Hadith is Hasan Sahih.