It was narrated that Qabus said: “Umm Fadl said: ‘O Messenger of Allah! It is as if I saw (in a dream) one of your limbs in my house.’ He said: ‘What you have seen is good. Fatimah will give birth to a boy and you will breastfeed him.’ Fatimah gave birth to Husain or Hasan, and I breastfed him with the milk of Qutham.’ She said: ‘I brought him to the Prophet (ﷺ) and placed him in his lap, and he urinated, so I struck him on the shoulder.” The Prophet (ﷺ) said: “You have hurt my son, may Allah have mercy on you.”
Source: sunnah.com
Other translations
Arabic
حَدَّثَنَا أَبُو بَكْرٍ، حَدَّثَنَا مُعَاوِيَةُ بْنُ هِشَامٍ، حَدَّثَنَا عَلِيُّ بْنُ صَالِحٍ، عَنْ سِمَاكٍ، عَنْ قَابُوسَ، قَالَ قَالَتْ أُمُّ الْفَضْلِ يَا رَسُولَ اللَّهِ رَأَيْتُ كَأَنَّ فِي بَيْتِي عُضْوًا مِنْ أَعْضَائِكَ قَالَ " خَيْرًا رَأَيْتِ تَلِدُ فَاطِمَةُ غُلاَمًا فَتُرْضِعِيهِ " . فَوَلَدَتْ حُسَيْنًا أَوْ حَسَنًا فَأَرْضَعَتْهُ بِلَبَنِ قُثَمَ قَالَتْ فَجِئْتُ بِهِ إِلَى النَّبِيِّ ـ صلى الله عليه وسلم ـ فَوَضَعْتُهُ فِي حَجْرِهِ فَبَالَ فَضَرَبْتُ كَتِفَهُ فَقَالَ النَّبِيُّ ـ صلى الله عليه وسلم ـ " أَوْجَعْتِ ابْنِي رَحِمَكِ اللَّهُ " .
sunnah.com