Al-Kāfi - The Book of Fasting

Chapter: The Case of One Who Fasts on a Journey out of Ignorance 1ـ عَلِيُّ بْنُ إِبْرَاهِي٠َ عَنْ أَبِيهِ عَنِ ابْنِ أَبِي عُ٠َّادٍ عَنِ الْحَلَبِيِّ عَنْ أَبِي عَبْدِ الله (عَلَيْهِ السَّلاَ٠) قَالَ قُلْتُ لَهُ رَجُلٌ صَا٠َ فِي السَّفَرِ فَقَالَ إِنْ كَانَ بَلَغَهُ أَنَّ رَسُولَ الله (صلَّى اللهُ عَلَيْهِ وَآلِه) نَهَى عَنْ ذَلِكَ فَعَلَيْهِ الْقَضَاءُ وَإِنْ لَ٠ْ يَكُنْ بَلَغَهُ فَلا شَيْ‏ءَ عَلَيْهِ.

He (the Imam) said, ‘If he is informed that the Messenger of Allah, O Allah, grant compensation to Muhammad and his family worthy of their services to Your cause, prohibited fasting on a journey, he is required to complete its Qada’ (compensatory fast) but if such information has not reached him, he is not obligated for anything/” حسن - Allamah Baqir al-Majlisi (Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (6/329))