899. hadíth
وَ قَالَ اَلصَّادِقُ عَلَيْهِ اَلسَّلاَمُ: "اَلنَّوْمُ رَاحَةٌ لِلْجَسَدِ وَ اَلنُّطْقُ رَاحَةٌ لِلرُّوحِ وَ اَلسُّكُوتُ رَاحَةٌ لِلْعَقْلِ".
Abu Abdullah Imam Jafar ibn Muhammad Al-Sadiq (a.s), peace be upon him, said: "Sleep is rest for the body, speech is rest for the soul, and silence is rest for the mind."