Theravāda Vinayapiṭaka

Monks’ rules and their analysis

Monks’ Training (Sekhiya) 59

… in Anāthapiṇḍika’s monastery. Now at that time the group of six monks taught dhamma to (someone) with a knife in his hand … “…

‘I will not teach dhamma to (someone) who has a knife in his hand (and) who is not ill,’ is a training to be observed.”

Knife means: a weapon, single-edged, double-edged. Dhamma should not be taught to (someone) who has a knife in his hand (and) who is not ill … if he is the first wrong-doer.