The Second Jungle Book by Rudyard Kipling Chapter 16 Page 3

Even so with Cobra-speech.

Open talk shall call to thee

Strength, whose mate is Courtesy.

Send no lunge beyond thy length;

Lend no rotten bough thy strength.

Gauge thy gape with buck or goat,

Lest thine eye should choke thy throat,

After gorging, wouldst thou sleep?

Look thy den is hid and deep,

Lest a wrong, by thee forgot,

Draw thy killer to the spot.

East and West and North and South,

Wash thy hide and close thy mouth.