Five Pillars of Islam
Another reason why Hajj Badal is criticized stems from lack of consistency. Out of the Five Pillars of Islam, none are subject to vicarious atonement. If prayer, Kalima, fasting, or Zakat are not able to be atoned for vicariously, then why can Hajj? Permitting vicarious atonement harms the strictness of performing Islamic traditions on the living and could harm the religion as a whole.