٤ـ مُحَمَّدُ بْنُ يَحْيَى عَنْ مُحَمَّدِ بْنِ الْحُسَيْنِ عَنْ صَفْوَانَ بْنِ يَحْيَى عَنِ الْعَلاءِ بْنِ رَزِينٍ عَنْ مُحَمَّدِ بْنِ مُسْلِمٍ عَنْ أَبِي عَبْدِ الله (عَلَيْهِ السَّلاَم) قَالَ إِذَا سَافَرَ الرَّجُلُ فِي شَهْرِ رَمَضَانَ فَخَرَجَ بَعْدَ نِصْفِ النَّهَارِ فَعَلَيْهِ صِيَامُ ذَلِكَ الْيَوْمِ وَيَعْتَدُّ بِهِ مِنْ شَهْرِ رَمَضَانَ فَإِذَا دَخَلَ أَرْضاً قَبْلَ طُلُوعِ الْفَجْرِ وَهُوَ يُرِيدُ الإِقَامَةَ بِهَا فَعَلَيْهِ صَوْمُ ذَلِكَ الْيَوْمِ فَإِنْ دَخَلَ بَعْدَ طُلُوعِ الْفَجْرِ فَلا صِيَامَ عَلَيْهِ وَإِنْ شَاءَ صَامَ.
4. 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 , 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.’” 