The Prophet ﷺ said about a person who had intercourse with his wife while she was menstruating: He must give one dinar or half a dinar in alms. Abu Dawud said: The correct version says si: One dinar or half a dinar. Shu'bah (a narrator) did not sometimes narrate this tradition as a statement of the Prophet ﷺ. (Using translation from Abū Dāʾūd 264)  

عَنِ النَّبِيِّ ﷺ فِي الَّذِي يَأْتِي امْرَأَتَهُ وَهِيَ حَائِضٌ قَالَ «يَتَصَدَّقُ بِدِينَارٍ أَوْ بِنِصْفِ دِينَارٍ»  

[Machine] "This is about how my life spanned as long as the life of Noah among his people in this world."  

فِي الَّذِي يَأْتِي امْرَأَتَهُ وَهِيَ حَائِضٌ قَالَ «§يَتَصَدَّقُ بِدِينَارٍ أَوْ بِنِصْفِ دِينَارٍ» قَالَ شُعْبَةُ أَمَّا حِفْظِي فَمَرْفُوعٌ وَقَالَ فُلَانٌ وَفُلَانٌ إِنَّهُ كَانَ لَا يَرْفَعُهُ قَالَ بَعْضُ الْقَوْمِ يَا أَبَا بِسْطَامٍ حَدِّثْنَا بِحِفْظِكَ وَدَعْنَا مِنْ فُلَانٍ فَقَالَ وَاللهِ مَا أُحِبُّ أَنِّي حَدَّثْتُ بِهَذَا وَسَكَتُّ عَنْ هَذَا وَأَنِّي عُمِّرْتُ فِي الدُّنْيَا عُمَرَ نُوحٍ فِي قَوْمِهِ