Nahj al-Balāgha

Hadith 2117
silence
١٤٨. وَقَالَ (عليه ‏السلام): الْمَرْءُ مَخْبُوءٌ تَحْتَ لِسَانِهِ.
148. Amīr al-mu’minīn, peace be upon him, said: Man is hidden under his tongue. [1]
Source: al-Sharīf al-Raḍī