وَ سَأَلَ رَجُلٌ الصَّادِقَ ع فَقَالَ: آكُلُ وَ أَنَا أَشُكُّ فِي الْفَجْرِ فَقَالَ كُلْ حَتَّى لَا تَشُكَّ.
English translationBab Ul Qaim Publications
Hadith.1962 - A man asked Imam Jafar ibn Muhammad Al-Sadiq (as), "I eat while I am unsure if dawn has risen." Imam (as) replied: "Eat until you are no longer in doubt."
Translation: Bab Ul Qaim Publications·Thaqalayn link·The Arabic above is the original.