The Messenger of Allah ﷺ (at times) got up in the morning in a state of junub, not because of sexual dreams (but on account of intercourse at night), and then observed fast.  

أَنَّهُ سَأَلَ أُمَّ سَلَمَةَ ؓ عَنِ الرَّجُلِ يُصْبِحُ جُنُبًا أَيَصُومُ قَالَتْ كَانَ رَسُولُ اللَّهِ ﷺ يُصْبِحُ جُنُبًا مِنْ غَيْرِ احْتِلاَمٍ ثُمَّ يَصُومُ  

[Machine] The passage translates to: "The Messenger of Allah ﷺ used to wake up in a state of janabah (impurity after sexual intercourse) without having a bath, and he would then observe fasting."  

أَنَّ رَسُولَ اللهِ ﷺ كَانَ يُصْبِحُ جُنُبًا مِنْ غَيْرِاحْتِلَامٍ ثُمَّ يَصُومُ  

[Machine] Aisha and Umm Salamah, both wives of the Prophet ﷺ , said, "The Messenger of Allah ﷺ would wake up in a state of janabah (ritual impurity) without having had any sexual dream during Ramadan, and then he would observe fasting."  

أَنَّ عَائِشَةَ وَأُمَّ سَلَمَةَ زَوْجَيِ النَّبِيِّ ﷺ قَالَتَا «كَانَ رَسُولُ اللَّهِ ﷺ يُصْبِحُ جُنُبًا مِنْ غَيْرِ احْتِلَامٍ فِي رَمَضَانَ ثُمَّ يَصُومُ»  

[Machine] The Messenger of Allah ﷺ used to wake up in a state of ritual impurity from intercourse with women, without having taken a bath, and would continue fasting.  

كَانَ رَسُولُ اللهِ ﷺ «يُصْبِحُ جُنُبًا مِنَ النِّسَاءِ مِنْ غَيْرِ حُلْمٍ ثُمَّ يَظَلُّ صَائِمًا»  

[Machine] That the Messenger of Allah ﷺ used to wake up in a state of janaba (impurity after sexual intercourse) without experiencing a wet dream, and then he would observe fasting.  

أَنَّ رَسُولَ اللهِ ﷺ «كَانَ يُصْبِحُ جُنُبًا مِنْ غَيْرِ احْتِلَامٍ ثُمَّ يُصْبِحُ صَائِمًا»  

[Machine] That the Prophet ﷺ used to wake up in a state of janaba (ritual impurity after intercourse) without having a sexual dream, and then he would observe fasting.  

أَنَّ النَّبِيَّ ﷺ كَانَ «يُصْبِحُ جُنُبًا مِنْ غَيْرِ احْتِلَامٍ ثُمَّ يُصْبِحُ صَائِمًا»