The Inyan of Ner Shabbos Kodesh

When the Shabbos Kodesh comes one must be enthusiastic with a holy fire, to burn all the desires and passions, and that is the language of Kodesh. As it says in Devarim 22:9. פן תוקדש המלאה Lest the growth of the seed, let full devotion - a language of Tukad Aish - kindling of fire. That is the Inyan (subject) of Ner Shabbos Kodesh.

Sefer Avodos Pinim

שדוק תבש ןיטוג ַא- לה' הישועה