The Book of Fasting
13/14. Chapter:
The strict prohibition of intercourse during the day in Ramadan for one who is fasting; And the obligation of offering major expiation and the definition thereof; And that it is obligatory for both the one who can afford it and the one who cannot afford it, and it remains an obligation for the one who cannot afford it until he has the means
Sahih Muslim
حَدَّثَنَا يَحْيَى بْنُ يَحْيَى، وَمُحَمَّدُ بْنُ رُمْحٍ، قَالاَ أَخْبَرَنَا اللَّيْثُ، ح وَحَدَّثَنَا قُتَيْبَةُ، حَدَّثَنَا لَيْثٌ، عَنِ ابْنِ شِهَابٍ، عَنْ حُمَيْدِ بْنِ عَبْدِ الرَّحْمَنِ بْنِ عَوْفٍ، عَنْ أَبِي هُرَيْرَةَ، - رضى الله عنه - أَنَّ رَجُلاً، وَقَعَ بِامْرَأَتِهِ فِي رَمَضَانَ فَاسْتَفْتَى رَسُولَ اللَّهِ صلى الله عليه وسلم عَنْ ذَلِكَ فَقَالَ " هَلْ تَجِدُ رَقَبَةً " . قَالَ لاَ . قَالَ " وَهَلْ تَسْتَطِيعُ صِيَامَ شَهْرَيْنِ " . قَالَ لاَ . قَالَ " فَأَطْعِمْ سِتِّينَ مِسْكِينًا " .
Abu Huraira reported that a person had intercourse with his wife during Ramadan (while fasting). He asked for the religious verdict (about it) from the Messenger of Allah (ﷺ), whereupon he (the Holy Prophet) said: Can you find a slave (to grant him freedom)? He said: No. He (the Prophet again) said: Can you afford to observe fasts for two (consecutive) months? He said: No. He (the Holy Prophet) said: Then feed sixty poor men.
Reference : Sahih Muslim 1111cIn-book reference : Book 13, Hadith 103USC-MSA web (English) reference : Book 6, Hadith 2459