five pillars

Short definition from Wiktionary

Proper noun

1. 1
   Alternative letter-case form of Five Pillars.
2. 2
   Five fundamental devotional practices of Islam, considered to be obligatory for all Muslims to follow; namely: declaration of faith in Allah (shahada), five daily prayers (salah), almsgiving (zakat), fasting (saum), and pilgrimage to Mecca (hajj).