Mbh 3.134.2b

[31] Vandin said, ‘Seven is the number of the domesticated animals; seven are the wild animals; seven metres are used in completing a sacrifice; seven are the Rishis, seven forms of paying homage are extant (in the world); and seven, it is known, are the strings of the Vina.’[32] Ashtavakra said, ‘Eight are the bags containing a hundred fold; eight is the number of the legs of the Sarabha, which preyeth upon lions; eight Vasus, as we hear, are amongst the celestials; and eight are the angles of yupa (stake), in all sacrificial rites.’[33] Vandin said, ‘Nine is the number of the mantras used in kindling the fire in sacrifices to the Pitris; nine are the appointed functions in the processes of creation; nine letters compose the foot of the metre, Vrihati; and nine also is ever the number of the figures (in calculation).’[34] Ashtavakra said, ‘Ten is said to be the number of cardinal points, entering into the cognition of men in this world; ten times hundred make up a thousand; ten is the number of months, during which women bear; and ten are the teachers of true knowledge, and ten, the haters thereof, and ten again are those capable of learning it.’[35] Vandin said, ‘Eleven are the objects enjoyable by beings; eleven is the number of the yupas; eleven are the changes of the natural state pertaining to those having life; and eleven are the Rudras among the gods in heaven.’[36] Ashtavakra said, Twelve months compose the year; twelve letters go to the composition of a foot of the metre called Jagati; twelve are the minor sacrifices; and twelve, according to the learned, is the number of the Adityas.’[37] Vandin said, ‘The thirteenth lunar day is considered the most auspicious; thirteen islands exist on earth.[38]