The Chapter on the Virtues of Prayer
Man Lā Yaḥḍuruh al-Faqīh|Volume 1|Book 1|Chapter 31
وَقَالَ أَبُو اَلْحَسَنِ اَلرِّضَا عَلَيْهِ اَلسَّلاَمُ: «اَلصَّلاَةُ قُرْبَانُ كُلِّ تَقِيٍّ.
Abu Al-Hasan, Imam Ali ibn Musa Ar-Ridha عليه السلام, said: "Prayer is the means of nearness for every pious person."
- Ṣaḥīḥ al-Faqīh