四分律刪補隨機羯磨 2.145

2.145

(Below this, one recites extensively according to the text. If danger arrives suddenly, one should say wherever one has reached: 'We have recited up to [such-and-such] a point; the remainder is regularly heard by the saṃgha.' If the dangerous obstacle is pressing close and one cannot recite the preface, the *Mahāsāṃghika-vinaya* says:)