Dighanikaya 1.1_26

1.1_26

Vinaye ca hetuattho karaṇattho ca sambhavati. Yo hi so sikkhāpadapaññattisamayo sāriputtādīhipi dubbiññeyyo, tena samayena hetubhūtena karaṇabhūtena ca sikkhāpadāni paññāpayanto sikkhāpadapaññattihetuñca apekkhamāno bhagavā tattha tattha vihāsi, tasmā tadatthajotanatthaṃ tattha karaṇavacanena niddeso kato.

And in the Vinaya, the sense of reason and the instrumental sense occur. For that time of laying down a training rule was difficult to know even for Sāriputta and others; through that time acting as the reason and acting as the instrument, the Blessed One, laying down the training rules and awaiting the reason for laying down a training rule, dwelt in various places; therefore, to indicate that meaning, the exposition there was made with the instrumental case.