The ritual can be practised only on Ekadasi and that also on the eleventh day of every lunar fortnight. The day is called Guruvayur Ekadasi or Vrischika Ekadasi day, in the Malayalam month of Vrishchikam. First the devotee has to take bath in the Papanasini Theertham, a water source near the cliff. It is believed that performing noozhal or crawling through the tunnel from one end to the other will wash away all the sins and thus allow one to attain Moksha, or freedom from rebirth.
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- "Thiruvilwamala Ramabhadra Swamy temple". Hindupedia. Retrieved 3 December 2014.
- "RSS Swayamsevaks helps devotees during 'Punarjani Guha crawling festival' in Thiruvilwamala Kerala". Samvada. Retrieved 3 December 2014.