Messenger of Allah ﷺ forbade the selling or donating the Wala' of a freed slave.  

سَمِعْتُ ابْنَ عُمَرَ ؓ يَقُولُ نَهَى رَسُولُ اللَّهِ ﷺ عَنْ بَيْعِ الْوَلاَءِ وَعَنْ هِبَتِهِ  

The Prophet ﷺ saw a boy with part of his head shaved and part left unshaven. He forbade them to do that, saying: Shave it all or leave it all.  

أَنَّ النَّبِيَّ ﷺ رَأَى صَبِيًّا قَدْ حُلِقَ بَعْضُ شَعْرِهِ وَتُرِكَ بَعْضُهُ فَنَهَاهُمْ عَنْ ذَلِكَ وَقَالَ احْلِقُوهُ كُلَّهُ أَوِ اتْرُكُوهُ كُلَّهُ  

The Prophet ﷺ gave the children of Ja'far three day' time to visit them. He then came to visit them, and said: Do not weep over my brother after this day. He said: Call to me the children of my brother. We were brought to him as if we were chicken. He said: Call a barber to me. He then ordered and our heads were shaved.  

أَنَّ النَّبِيَّ ﷺ أَمْهَلَ آلَ جَعْفَرٍ ثَلاَثًا أَنْ يَأْتِيَهُمْ ثُمَّ أَتَاهُمْ فَقَالَ لاَ تَبْكُوا عَلَى أَخِي بَعْدَ الْيَوْمِ ثُمَّ قَالَ ادْعُوا لِي بَنِي أَخِي فَجِيءَ بِنَا كَأَنَّا أَفْرُخٌ فَقَالَ ادْعُوا لِي الْحَلاَّقَ فَأَمَرَهُ فَحَلَقَ رُءُوسَنَا  

"The Messenger of Allah [SAW] forbade women to shave their heads."  

عَنْ عَلِيٍّ نَهَى رَسُولُ اللَّهِ ﷺ أَنْ تَحْلِقَ الْمَرْأَةُ رَأْسَهَا