Chapter on the Reward of Suhoor
Man Lā Yaḥḍuruh al-Faqīh|Volume 2|Book 2|Chapter 22
وَ قَالَ عَلَيْهِ اَلسَّلاَمُ: «لَوْ أَنَّ اَلنَّاسَ تَسَحَّرُوا ثُمَّ لَمْ يُفْطِرُوا إِلاَّ عَلَى اَلْمَاءِ لَقَدَرُوا عَلَى أَنْ يَصُومُوا اَلدَّهْرَ».
Imam عليه السلام said: "If people were to partake in suhoor and then break their fast only with water, they would be able to fast continuously throughout the year."
- Ṣaḥīḥ al-Faqīh