tathā hi tathāpyayaṃ vicāro 'vatarati tenāpi pareṇa kathaṃ jñātam nahyajñātvā tathopadeśaḥ sambhavet tenāpyanyato jñātam iti cet evaṃ tarhyanavasthā syāt tataścandhaparamparāyāṃ satyāṃ sarveṣām anabhijñatvān na samyagupadeśaḥ syāt /
For then this investigation arises: how did that other person know it? For teaching cannot occur without knowledge. If [it is said] that he too learned it from another, then there would be infinite regress. Thus, there being a series of blind [people], since all would be ignorant, there could be no proper teaching.