253 Vows of a Fully Ordained Tibetan Buddhist Monk: the 253 vows of a fully ordained monk were supposed to be explicitly prescribed by the Buddha himself in the vinaya scriptures. They are broadly divided into five classes: Fist Class: 4 Defeats, Second Class: 13 Remainders, Third Class: 120 Downfalls, Fourth Class: 4 matters to be confessed individually, Fifth Class: 112 Misdeeds.