The Prophet ﷺ said while he was on the pulpit, "Show mercy and you will be shown mercy. Forgive and Allah will forgive you. Woe to those who are mere funnels for words. Woe to those who persist, who knowingly cling to what they have done."
عن النبي ﷺ أنه قال وهو على المنبر: ارحموا ترحموا، واغفروا يغفر الله لكم، ويل لأقماع القول، ويل للمصرين الذين يصرون على ما فعلوا وهم يعلمون.
Ahmad (6541–6542) and Bukhari in Adab al-Mufrad (380) both narrated it through routes from Hurayz (that is, Ibn Uthman), from Habban bin Zayd Shurabi, from Abdullah bin Amr bin As, who mentioned it. Its chain is hasan because of Habban bin Zayd Shurabi, for he is hasan al-hadith. Ibn Hibban mentioned him among the trustworthy, and Fasawi mentioned him among the trustworthy Egyptian successors. Abu Dawud said, "The teachers of Hurayz are all trustworthy," so he is no less than the rank of "truthful."As for what has been narrated from Abu Bakr Siddiq as a raised report, "One who seeks forgiveness has not persisted, even if he returns to the sin seventy times a day," its chain is daif. Abu Dawud (1514) and Tirmidhi (3559) both narrated it through the route of Uthman bin Waqid, from Abu Nasirah, from a freedman of Abu Bakr, from Abu Bakr Siddiq, who mentioned it. Tirmidhi said, "This is a gharib hadith, we only know it through the hadith of Abu Nasirah, and its chain is not strong."I say, there is disagreement about Abu Nasirah, the narrator from the freedman of Abu Bakr, as to whether he is a different narrator from Abu Nasirah Wasiti, Muslim bin Ubayd, or whether they are one and the same. Some scholars distinguished between them, including Abu Ahmad Hakim. Bazzar said, "Abu Nasirah and the freedman of Abu Bakr are both unknown." Bukhari, Abu Hatim, and others held that Abu Nasirah, the narrator from the freedman of Abu Bakr, is the same as Wasiti, whose name is Muslim bin Ubayd, and that he is hasan al-hadith. Ahmad regarded him as trustworthy. Ibn Main said, "Salih." Ibn Hibban mentioned him among the trustworthy and said, "He used to make mistakes, given how little he narrated." As for Azdi, he declared him daif. The freedman of Abu Bakr is unknown and unrecognized.