hadith
4009
۞
Imam Ali (AS) said, 'The best of worship is for the eyes to remain awake engaged in the remembrance of Allah, Glory be to Him.
الإمامُ عليٌّ (عَلَيهِ الّسَلامُ): أفضَلُ العِبادَةِ سَهَرُ العُيونِ بذِكرِ اللّهِ سبحانَهُ .