مِشْكَاةُ الْمَصَابِيحِ
Mishkat al-Masabih 553
Purification
Menstruation - Section 2
وَعَنِ ابْنِ عَبَّاسٍ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «إِذَا وَقَعَ الرَّجُلُ بِأَهْلِهِ وَهِيَ حَائِضٌ فَلْيَتَصَدَّقْ بِنِصْفِ دِينَارٍ» . رَوَاهُ التِّرْمِذِيّ وَأَبُو دَاوُد النَّسَائِيّ والدارمي وَابْن مَاجَه
Ibn ‘Abbas reported God’s messenger as saying, “When a man has intercourse with his wife while she is menstruating, he must give half a dinar in alms.’ Tirmidhi, Abu Dawud, Nasa’i, Darimi and Ibn Majah transmitted it.
Mishkat al-Masabih, 553صَحِيحٌ (الألباني)