In the Rahasyatraya, Thirumantra is known as Mantra Rajam and Dvayam is known as Mantra Ratnam. Acharyas delighted more deeply in Dvayam than in Thirumantram. It is said that acharyas would say "May you be born in Thirumantram and grow in Dvayam and become focused in Dvayam only". In Sri Manavala Mamunigal's dinacarya it is said "mantraratnAnusandAna santata spuritAtaram, tadartthatatva nityAnasannatta pulakOtmakam". That is, Mamunigal's lips will always be chanting Dvaya mantram, and as he recited it with the true knowledge of its inner meanings his body will have goosebumps all the time. Such is the greatness of the Dvaya mantra and the understanding of its meanings is essential for all Srivaishnavas.