Abu Huraira on Akhlaq: Speech part of deeds, character part of religion

Al-Dahhak reported: Abu Huraira, may Allah be pleased with him, said, “Whoever does not view his speech as part of his deeds and his character as part of his religion, he will be ruined without realizing it.”

Source: al-Ṣamt wa Ādāb al-Lisān 560

عَنِ الضَّحَّاكِ عَنْ أَبِي هُرَيْرَةَ رَضِيَ اللَّهُ عَنْهُ أَنَّهُ قال مَنْ لَمْ يَرَ أَنَّ كَلامَهُ مِنْ عَمَلِهِ وَأَنَّ خُلُقَهُ مِنْ دِينِهِ هَلَكَ وَهُوَ لا يَشْعُرُ

560 الصمت وآداب اللسان