Sahih Muslim
The Book Pertaining to Clothes and Decoration (Kitab Al-Libas wal-Zinah)
Book Number: 024 / Hadith Number: 5297
Asma', daughter of Abu Bakr, reported that a woman came to Allah's Apostle (may peace be upon him) and said: I have married my daughter (whose) hair of head have fallen. Her spouse likes them (the long hair). Allah's Messenger (may add false hair to her head? He forbade her to do this.