Hadith 1691
۞
71. Amīr al-mu’minīn, peace be upon him, said: As intelligence increases, speech decreases. [1]
٧١. وَقَالَ (عليه السلام): إِذَا تَمَّ الْعَقْلُ نَقَصَ الْكَلاَمُ.