Jainism ni prachin grantho anusar "pūrva" ek prakar nu jñānpurvaṇ granth che, ane ā prashna vadhu tarike jñān ane kāl sambandhi chhe. "Ek pūrv" (1 Pūrv) etle samay na ek nirdharit māpan che, je Jain shastroni vyakhya anusar samajvānu hoy chhe.

Jain shastro anusar, ek pūrv ni avadhi ghano lambo samay hoy chhe. Ek pūrv ketla varsh nu hoy, te vishe spashta sankhya upalabdh nathi, karan ke ā samay ni vyakhya atishay lambi ane ganit ni drashtie apramāṇik chhe. Tathāpi, ketlak Jain grantho anusar, ek pūrv lakhon thi karodon varsh ni avadhi hoy chhe.

Saṅkṣep ma kahu to: Ek pūrv ni avadhi bahu lambi hoy chhe—āni tulna vartamān varshoni ganatri thi karvi asambhav chhe, pan anya Jain granthoni tulna ma te lakhon thi karodon varsh jitli lambi hoy chhe.

Yadi tamne pūrv vishe vishesh mahiti joiye hoy, to tame puchine vadhare spashtata mangi shako cho.