Sahih al-Bukhari 67:139
Narrated `Aisha:
An Ansari woman gave her daughter in marriage and the hair of the latter started falling out. The Ansari women came to the Prophet (ﷺ) and mentioned that to him and said, "Her (my daughter's) husband suggested that I should let her wear false hair." The Prophet (ﷺ) said, "No, (don't do that) for Allah sends His curses upon such ladies who lengthen their hair artificially."
Reference
Sahih al-Bukhari 67:139
In-book reference
Book 67, Hadith 139
Arabic Text
حَدَّثَنَا خَلاَّدُ بْنُ يَحْيَى، حَدَّثَنَا إِبْرَاهِيمُ بْنُ نَافِعٍ، عَنِ الْحَسَنِ ـ هُوَ ابْنُ مُسْلِمٍ ـ عَنْ صَفِيَّةَ، عَنْ عَائِشَةَ، أَنَّ امْرَأَةً، مِنَ الأَنْصَارِ زَوَّجَتِ ابْنَتَهَا فَتَمَعَّطَ شَعَرُ رَأْسِهَا، فَجَاءَتْ إِلَى النَّبِيِّ صلى الله عليه وسلم فَذَكَرَتْ ذَلِكَ لَهُ، فَقَالَتْ إِنَّ زَوْجَهَا أَمَرَنِي أَنْ أَصِلَ فِي شَعَرِهَا. فَقَالَ " لاَ إِنَّهُ قَدْ لُعِنَ الْمُوصِلاَتُ ".