Al-Kāfi - The Book of Fasting

Chapter: The Case of One Who Wakes up in the Morning with an Intention to Fast, but Who Does Not Do So or Vice Versa when Fasting Is a Compensatory Fast for the Missed Fast in the Month of Ramadan or Other Days ِنْ أَصْحَابِنَا عَنْ أَحْ٠َّدٍ عَنِ الْحَسَنِ بْنِ ٠َحْبُوبٍ عَنِ الْحَارِثِ بْنِ ٠َّدٍ عَنْ بُرَيْدٍ الْعِجْلِيِّ عَنْ أَبِي جَعْفَرٍ (عَلَيْهِ السَّلاَ٠) فِي رَجُلٍ أَتَى أَهْلَهُ فِي يَوْ٠َضَانَ قَالَ إِنْ كَانَ أَتَى أَهْلَهُ قَبْلَ زَوَالِ الشَّ٠ْسِ فَلا شَيْ‏ءَ عَلَيْهِ إِلاَّ يَوْ٠ٍ وَإِنْ كَانَ أَتَى أَهْلَهُ بَعْدَ زَوَالِ الشَّ٠ْسِ فَإِنَّ عَلَيْهِ أَنْ يَتَصَدَّقَ عَلَى عَشَرَةِ ٠َسَاكِينَ فَإِنْ لَ٠َ ثَلاثَةَ أَيَّا٠5.

A number of our people have narrated from Ahmad ibn Muhammad from al-FIassan ibn Mahbub from al=FIarith ibn Muhammad from Burayd al- ‘ Ij liy who has said the following: “I once asked abu Ja‘far (a.s.), about a man who when fasting as Qada’ (compensatory fast) for the fast of the month of Ramadan goes to his wife for sexual relation. He (the Imam) said, ‘If it takes place before Zawal (declining of the sun toward the west at noontime), he is not obligated for anything.

It is only one day for one day. If it happens after Zawal (declining of the sun toward the west at noontime), he is required to pay charity to ten destitute people, and if he is not able to do so, he is required to fast one day for one day and fast three days as expiation for what he has done.’” جهول - Allamah Baqir al-Majlisi (Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (16/316))