Tawaf al-Qudum

Rukn (Arabic: ركن; pl. Arkan أركان; meaning "pillar"), in Islamic jurisprudence, refers to an obligatory act, with failure to perform it rendering the act invalid. If a Rukn is neglected, the entire act must be repeated...

The Qibla (Arabic: قبلة‎‎‎) is the direction Muslims should face during Salah - toward the Kaaba in Makkah. It is also the direction toward which the deceased are orientated when they are buried.