The Messenger of Allah ﷺ would be overtaken by the dawn when he was in a state of sexual defilement. The narrator 'Abd Allah al-Adhrami said in his version: During Ramadan, due to sexual intercourse and no owing to a dream (i.e. nocturnal emission), and would fast. Abu Dawud said: How brief is this sentence uttered by the narrator, this is, "he was overtaken by daw when he was in the state of sexual defilement"? The tradition says: The Prophet ﷺ was overtaken by dawn in the state of sexual defilement when he was fasting.  

عَنْ عَائِشَةَ وَأُمِّ سَلَمَةَ زَوْجَىِ النَّبِيِّ ﷺ أَنَّهُمَا قَالَتَا كَانَ رَسُولُ اللَّهِ ﷺ يُصْبِحُ جُنُبًا قَالَ عَبْدُ اللَّهِ الأَذْرَمِيُّ فِي حَدِيثِهِ فِي رَمَضَانَ مِنْ جِمَاعٍ غَيْرِ احْتِلاَمٍ ثُمَّ يَصُومُ  

A man said to Messenger of Allah ﷺ: Messenger of Allah, I was overtaken by dawn while I was sexually defiled, and I want to keep fast. The Messenger of Allah ﷺ said: I am also overtaken by dawn while I am in the state of sexual defilement ; I also want to keep fast. I take a bath and I keep fast. The man said: Messenger of Allah, you are not like us ; Allah has forgiven you your past and future sins. The Messenger of Allah ﷺ became angry and said: “I swear by Allah, I hope I shall be the most fearful of you of Allah, and most familiar of you with what I follow.”  

أَنَّ رَجُلاً قَالَ لِرَسُولِ اللَّهِ ﷺ وَهُوَ وَاقِفٌ عَلَى الْبَابِ: يَا رَسُولَ اللَّهِ، إِنِّي أُصْبِحُ جُنُبًا وَأَنَا أُرِيدُ الصِّيَامَ فَقَالَ رَسُولُ اللَّهِ ﷺ: «وَأَنَا أُصْبِحُ جُنُبًا وَأَنَا أُرِيدُ الصِّيَامَ فَأَغْتَسِلُ وَأَصُومُ» فَقَالَ الرَّجُلُ: يَا رَسُولَ اللَّهِ، إِنَّكَ لَسْتَ مِثْلَنَا، قَدْ غَفَرَ اللَّهُ لَكَ مَا تَقَدَّمَ مِنْ ذَنْبِكَ وَمَا تَأَخَّرَ. فَغَضِبَ رَسُولُ اللَّهِ ﷺ وَقَالَ: «وَاللَّهِ إِنِّي لأَرْجُو أَنْ أَكُونَ أَخْشَاكُمْ لِلَّهِ وَأَعْلَمَكُمْ بِمَا أَتَّبِعُ»