Sahih Bukhari | Volume 7 | Hadith Number 824
Narrated by Asma'
A woman asked the Prophet saying, "0 Allah's Apostle! My daughter got measles and her hair fell out. Now that I got her married, may I let her use false hair?" He said (to her), "Allah has cursed the lady who lengthens hair artificially and the one who gets her hair lengthened artificially."