Answer
In the Name of Allah, Most Gracious, Most Merciful.
All praise and thanks are due to Allah, and peace and blessings be upon His Messenger.
In this fatwa:
A group of scholars hold the view that wiping the neck during wudu (ritual ablution) is permissible.
Answering your question, Dr. Muhammad Salama, PhD, Islamic Studies in English, Associate Professor at the Faculty of Islamic Sciences al-Madinah International University (Mediu), states:
A group of scholars hold the view that wiping the neck during wudu (ritual ablution) is permissible.
But authentic reports that describe how the Messenger of Allah (peace be upon him) performed wudu say nothing about wiping the neck.
Therefore, the majority of scholars maintain that this practice is not recommendable. Even some scholars label this practice as bidah (heretical innovation); particularly if practiced regularly.
Almighty Allah knows best.