أَخْبَرَنَا عُبَيْدُ اللَّهِ بْنُ سَعِيدٍ، قَالَ حَدَّثَنَا يَحْيَى، عَنْ عُبَيْدِ اللَّهِ، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم لَعَنَ الْوَاصِلَةَ ‏.‏
Translation
It was narrated from Ibn 'Umar that

The Messenger of Allah [SAW] cursed the woman who affixes hair extensions.

Comment

The Book of Adornment - Sunan an-Nasa'i 5249

"The Messenger of Allah [SAW] cursed the woman who affixes hair extensions."

Commentary on the Prohibition

This prohibition concerns the practice known as "wasl" - attaching false hair or extensions to one's natural hair. The severity is indicated by the curse (la'nah) from the Prophet, showing this is a major sin that distances one from Allah's mercy.

Scholars explain this prohibition stems from multiple concerns: deception in appearance, altering Allah's creation without valid reason, and imitating disbelieving women who practiced such adornments.

Scholarly Exceptions and Distinctions

The majority of scholars make exception for a married woman seeking to beautify herself for her husband, provided there is no deception and the husband is aware.

Some jurists distinguish between temporary attachments (prohibited) and permanent integrations like wigs for medical necessity (permissible with conditions).

Spiritual Wisdom Behind the Ruling

This ruling preserves natural creation and prevents the deception that arises from artificial enhancements. It teaches contentment with Allah's decree regarding one's appearance.

The prohibition also serves to distinguish Muslim women in their adornment practices from those of other nations, preserving Islamic identity and values.