The Chapter on Obligatory Prayers
Man Lā Yaḥḍuruh al-Faqīh|Volume 1|Book 1|Chapter 30
وَقَالَ اَلصَّادِقُ عَلَيْهِ اَلسَّلاَمُ: «إِنَّ شَفَاعَتَنَا لاَ تَنَالُ مُسْتَخِفّاً بِالصَّلاَةِ.
Imam Jafar ibn Muhammad Al-Sadiq عليه السلام said: "Indeed, our intercession will not reach one who takes prayer lightly."
- Ṣaḥīḥ al-Faqīh