In a Hadith discussion, the Prophet's ﷺ saying “Actions depend on intentions” is called an athar. What should we understand?

Athar: Its Use for Mawqūf, Maqṭūʿ and Hadith

• It now counts as ʿUmar's own saying.
• The word athar cannot be used for Hadith at all.
• Athar here refers to Hadith; the saying remains Prophetic.