On Sufyān bin 'Abdillah Ath-Thaqafī رضي الله عنه he said: “I said: O Messenger of Allāh what do you fear the most for me?” He (ﷺ) took hold of his tongue and said, "This." (At-Tirmidhī #2410/Ibn Mājah #3972 Authenticated by Shaykh Al-Albānī رحمه الله)
The Evils Of The Tongue
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