Adapted from the Translation by T. W. Rhys Davids and Hermann Oldenberg
FIRST KHANDHAKA(THE FORMATION OF THE ORDER OF BHIKKHUS)
Chapter-64 : No Ordination to One Who Killed His Mother.
1. At that time a certain young man deprived his mother of life. He was grieved, ashamed, and loathed this sinful deed. Now this young man thought: 'What am I to do to get rid of my sinful deed?' Then this young man gave himself this answer: 'These Sakyaputtiya Samanas lead indeed a virtuous, tranquil, holy life, &c. If I could obtain pabbajja with the Sakyaputtiya Samanas, I might get rid of my sinful deed.'
2. Then that young man went to the Bhikkhus and asked them for the pabbajja ordination. The Bhikkhus said to the venerable Upali: 'Formerly , friend Upali, a serpent in the shape of a youth received the pabbajja ordination with the Bhikkhus; pray, friend Upali, examine this young man.' Then that young man, when examined by the venerable Upali, told him the whole matter. The venerable Upali told it to the Bhikkhus; the Bhikkhus told it to the Lord Buddha.
'Let a person, O Bhikkhus(Monks), that is guilty of matricide, if he has not received the upasampada ordination, not receive it; if he has received it, let him be expelled (from the fraternity).'