Source: Tafsir al-Ahlam al-Kabir (Ibn Sirin)
The neck in a dream is the place of trust and religion. Its strength indicates trustworthiness. Striking it indicates paying off debt or relief from worry.
Source: Ta'tir al-Anam fi Ta'bir al-Manam (Al-Nabulsi)
The neck indicates authority. Whoever sees himself strike a man's neck will gain authority over him.
Source: Al-Isharat fi Ilm al-Ibarat (Ibn Shahin)
The neck is interpreted as debt. Whoever sees a rope around his neck has a debt upon him.