Ahmad (6/451), al-Khara’iti, and al-Tirmidhi (3/149) recorded it, omitting the words, “and nothing …” Al-Tirmidhi added: “Whoever is deprived of his share of gentleness has been deprived of his share of goodness.” He said: “A good and authentic hadith.”
I say: No one besides Ibn Hibban declared this Ibn Mamlak trustworthy, and no one other than Ibn Abi Mulaykah narrated from him. For this reason, al-Hafiz described him as “acceptable”—that is, when supported by corroborating evidence. Through this route, al-Bukhari recorded it in al-Adab al-Mufrad (464), as did al-Bayhaqi in al-Sunan (10/193), with wording like that of al-Tirmidhi, adding: “The heaviest thing on the believer’s Scale is good character. Indeed, Allah hates the obscene, foul-mouthed person.” Ibn Hibban also recorded this addition (1920), as did al-Tirmidhi (1/145), with the wording: “Nothing is heavier on the believer’s Scale on the Day of Resurrection than good character. For Allah Most High hates the obscene, foul-mouthed person.”
He also said: “A good and authentic hadith.” You have already seen the problem with it; however, its first part has been established through the first route, and it has a supporting report from the hadith of Aishah, cited previously (518). The other part has two supporting reports, one of them from the hadith of Ibn Amr, with the wording: “the obscene person who deliberately cultivates obscenity.”