Umm Qais daughter of Mihsan reported that she came to the Messenger of Allah ﷺ with her little son who had not attained the age of eating food. The Messenger of Allah ﷺ seated him in his lap, and he urinated on his clothe. He sent for water and sprayed it (over his clothe) and did not wash it.  

أَنَّهَا أَتَتْ بِابْنٍ لَهَا صَغِيرٍ لَمْ يَأْكُلِ الطَّعَامَ إِلَى رَسُولِ اللَّهِ ﷺ فَأَجْلَسَهُ رَسُولُ اللَّهِ ﷺ فِي حِجْرِهِ فَبَالَ عَلَى ثَوْبِهِ فَدَعَا بِمَاءٍ فَنَضَحَهُ وَلَمْ يَغْسِلْهُ  

Al-Husayn ibn Ali was (sitting) in the lap of the Messenger of Allah ﷺ. He passed water on him. I said: Put on (another) clothe, and give me your wrapper to wash. He said: The urine of a female child should be washed (thoroughly) and the urine of a male child should be sprinkled over.  

كَانَ الْحُسَيْنُ بْنُ عَلِيٍّ ؓ فِي حِجْرِ رَسُولِ اللَّهِ ﷺ فَبَالَ عَلَيْهِ فَقُلْتُ الْبَسْ ثَوْبًا وَأَعْطِنِي إِزَارَكَ حَتَّى أَغْسِلَهُ قَالَ إِنَّمَا يُغْسَلُ مِنْ بَوْلِ الأُنْثَى وَيُنْضَحُ مِنْ بَوْلِ الذَّكَرِ  

I used to serve the Prophet ﷺ. Whenever he intended to wash himself, he would say: Turn your back towards me, So I would turn my back and hide him. (Once) Hasan or Husayn (may Allah be pleased with them) was brought to him and he passed water on his chest. I came to wash it. He said: It is only the urine of a female which should be washed; the urine of a male should be sprinkled over. 'Abbas (a narrator) said: Yahya b. al-Walid narrated the tradition to us. Abu Dawud said: He (Yahya) is Abu al-Za'ra'. Harun b. Tamim said on the authority of al-Hasan: All sorts of urine are equal.  

كُنْتُ أَخْدُمُ النَّبِيَّ ﷺ فَكَانَ إِذَا أَرَادَ أَنْ يَغْتَسِلَ قَالَ وَلِّنِي قَفَاكَ فَأُوَلِّيهِ قَفَاىَ فَأَسْتُرُهُ بِهِ فَأُتِيَ بِحَسَنٍ أَوْ حُسَيْنٍ ؓ فَبَالَ عَلَى صَدْرِهِ فَجِئْتُ أَغْسِلُهُ فَقَالَ يُغْسَلُ مِنْ بَوْلِ الْجَارِيَةِ وَيُرَشُّ مِنْ بَوْلِ الْغُلاَمِ قَالَ عَبَّاسٌ حَدَّثَنَا يَحْيَى بْنُ الْوَلِيدِ  

The urine of a female (child) should be washed and the urine of a male (child) should be sprinkled over until the age of eating.  

يُغْسَلُ مِنْ بَوْلِ الْجَارِيَةِ وَيُنْضَحُ مِنْ بَوْلِ الْغُلاَمِ مَا لَمْ يَطْعَمْ  

He narrated the tradition to the same effect, but he did not mention the words "until the age of eating". This version adds: Qatadah said: This is valid until the time they do not eat food; when they begin to eat, their urine should be washed.  

أَنَّ النَّبِيَّ ﷺ قَالَ فَذَكَرَ مَعْنَاهُ وَلَمْ يَذْكُرْ مَا لَمْ يَطْعَمْ زَادَ قَالَ قَتَادَةُ هَذَا مَا لَمْ يَطْعَمَا الطَّعَامَ فَإِذَا طَعِمَا غُسِلاَ جَمِيعًا  

Al-Hasan reported on the authority of his mother that she was Umm Salamah pouring water on the urine of the male child until the age when he did not eat food. When he began to eat food, she would wash (his urine). And she would wash the urine of the female child.  

أَنَّهَا أَبْصَرَتْ أُمَّ سَلَمَةَ تَصُبُّ الْمَاءَ عَلَى بَوْلِ الْغُلاَمِ مَا لَمْ يَطْعَمْ فَإِذَا طَعِمَ غَسَلَتْهُ وَكَانَتْ تَغْسِلُ بَوْلَ الْجَارِيَةِ