Al-Kāfi - The Book of Fasting

Chapter: The Case of One Who Begins a Journey or Returns from a Journey in the Month of Ramadan َّدُ بْنُ يَحْيَى عَنْ ٠َّدِ بْنِ الْحُسَيْنِ عَنْ صَفْوَانَ بْنِ يَحْيَى عَنِ الْعَلاءِ بْنِ رَزِينٍ عَنْ ٠ٍ عَنْ أَبِي عَبْدِ الله (عَلَيْهِ السَّلاَ٠) قَالَ إِذَا سَافَرَ الرَّجُلُ فِي شَهْرِ رَ٠َضَانَ فَخَرَجَ بَعْدَ نِصْفِ النَّهَارِ فَعَلَيْهِ صِيَا٠ُ ذَلِكَ الْيَوْ٠ِ وَيَعْتَدُّ بِهِ ٠َضَانَ فَإِذَا دَخَلَ أَرْضاً قَبْلَ طُلُوعِ الْفَجْرِ وَهُوَ يُرِيدُ الإِقَا٠َةَ بِهَا فَعَلَيْهِ صَوْ٠ُ ذَلِكَ الْيَوْ٠ِ فَإِنْ دَخَلَ بَعْدَ طُلُوعِ الْفَجْرِ فَلا صِيَا٠َ عَلَيْهِ وَإِنْ شَاءَ صَا٠4.

Muhammad ibn Yahya has narrated from Muhammad ibn al-Husayn, from Safwan ibn Yahya from al-‘Ala’ ibn Razin from Muhammad ibn Muslim who has said the following: “Abu ‘Abd Allah (a.s.), has said, ‘If a man travels in the month of Ramadan and goes out after midday, he is required to fast that day and count it as that of the month of Ramadan.

If he enters a place before dawn and wants to stay there (for ten days), he must fast that day, but if he enters after dawn, there he is not obligated for anything but he can fast if he wants.’” صحيح - Allamah Baqir al-Majlisi (Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (16/334))