[Buddha-l] Canonical conundrums

[L.S. Cousins]

>Hello. Can anyone out there tell me EXACTLY where in the Pali Canon the
>Buddha says anything to this effect? I have already spent several hours
>searching both online and in the texts, so this is my last resort. Any
>assistance would be much appreciated.
>
>(1) Deer are safe as long as they feed high in the mountains, but when they
>come down to the fields to nibble the crops, they are liable to be shot. In
>the same way, if monks stray from their ancestral grazing grounds, the
>pastures of meditation and the solitary life - if they start nibbling at the
>fringes of worldly life - then Mara is likely to take a pot-shot at them.

This looks like a paraphrase from memory of S V  148f.

Lance Cousins