Tavaf al-Qudum, also known as Tavaf al-Tahiyyah (greeting tavaf), is the first tavaf a haci performs upon arriving in Mekke. The majority of scholars — Hanafi, Shafi'i, and Hanbali — consider it a Sunnah mu'akkadah (emphasized sunnet act), meaning it is highly sunnet but not farz, and no penalty is due for omitting it. The Maliki school, however, considers it wajib (farz) and holds that a dam (sacrificing a sheep) is required for deliberately skipping it without a valid excuse.
Sheikh Ibn Baz explained that Tavaf al-Qudum applies specifically to hacilar performing Hac al-Ifrad (Hac alone) or Hac al-Qiran (combined Hac and Umre). Pilgrims performing Hac al-Tamattu do not need a separate Tavaf al-Qudum because their Umre tavaf upon arrival serves this purpose. Additionally, those who arrive in Mekke after the 9th of Dhul-Hijjah (after Arafat) are exempt from Tavaf al-Qudum according to all scholars, as the time for it has passed.
Sheikh Ibn Uthaymeen noted that menstruating women who arrive in Mekke for Hac and cannot perform tavaf before going to Arafat are excused from Tavaf al-Qudum without any penalty, even according to those who consider it farz. He emphasized that Tavaf al-Qudum, whether Sunnah or wajib, is waived for anyone with a valid excuse, and the obligation of Tavaf al-Ifadah (the essential Hac tavaf) remains unaffected.