The sequence of narrators is called the sanad (سند). It tells us who transmitted the Hadith from whom.
In this example:
• Rāwī: A person transmitting the Hadith, such as Umar or Alqama.
• Part of the sanad: Alqama heard Umar, and Umar heard the Prophet ﷺ.
• Part of the matn: The Prophet's ﷺ words about intentions that we read.
Listing names alone is not enough; we also need to understand who transmitted from whom.