٤ـ عِدَّةٌ مِنْ أَصْحَابِنَا عَنْ سَهْلِ بْنِ زِيَادٍ عَنِ الرَّيَّانِ بْنِ الصَّلْتِ عَنْ يُونُسَ قَالَ الصَّائِمُ فِي شَهْرِ رَمَضَانَ يَسْتَاكُ مَتَى شَاءَ وَإِنْ تَمَضْمَضَ فِي وَقْتِ فَرِيضَتِهِ فَدَخَلَ الْمَاءُ حَلْقَهُ فَلَيْسَ عَلَيْهِ شَيْ‏ءٌ وَقَدْ تَمَّ صَوْمُهُ وَإِنْ تَمَضْمَضَ فِي غَيْرِ وَقْتِ فَرِيضَةٍ فَدَخَلَ الْمَاءُ حَلْقَهُ فَعَلَيْهِ الإِعَادَةُ وَالأَفْضَلُ لِلصَّائِمِ أَنْ لا يَتَمَضْمَضَ. 
4. A number of our people have narrated from Sahl ibn Ziyad from al-Rayyan ibn al-Salt from Yunus in a marfu‘ manner has said the following: “He (the Imam) ‘Alayhi al-Salam, has said, ‘One who is fasting in the month of Ramadan can brush one’s teeth whenever one wants; but if one rinses one’s mouth and water enters his throat he is not obligated for anything, his fast is complete. If one rinses one’s mouth in a time other than the time of obligatory Salat (prayer) and water enters his throat, one must fast again (make its Qada’ (compensatory fast) and it is better for one fasting not to rinse one’s mouth.’” 