Othaadal-59th chapter of Thirukural-
(To win over the enemy or a competitor , there is a need to get information about them. One of the methods is spying. But even in that there is a dharma. Valluvar details that Dharma.)
1.Othum urai Chandra noolum , ivai irandum,
Theththenka mannavan kan,
1.The king should understand that spies and famous books of Dharma,
Are his two eyes in understanding everything.
2,Yellarkkum yellam nigazbhavai yrejnandrun,
Vallarithal vendhan thozhil
2.Understanding quickly what happens to every one ,
All the time is the job of the ruler.
3.Oththinaan I othi porul theriyaa mannavan,
Koththam kola kidanthathu yil.
3.A ruler who does not understand evens happening around him,
Using spies, would not find any way to achieve victory,
4.Vinai cheivaar tham chutham vendaathaar yendraangu ,
Anaivarayum aaraivathu oththu.
4.A spy is the one who collects information on government servants,
Near relations of the king as well as the enemies of the country.
5.Kadaa uruvodu kannanjaathu yaandum,
Ukaamai vallathe othu.
5.With an unrecognizable form and with no fear about others noticing them,
A spy moves around without making other people know his mind.
6.Thuranthaar padivantharaaki iranthaaraynthu ,
Yen cheyinum chorvilathu oththu.
6.Taking the form of a saint and entering difficult to enter places,
And never revealing himself even if tortured by enemy are the natures of a great spy.
7.Maraithavai ketkavaththaki arinthavai ,
Iyappadu yillathe oththu.
7.Hiding and getting information about the act of others and able to get,
Information from others and having ability to analyze them without any doubt are the duties of spy.
8.Othoiththi thantha porulayum maththumor ,
Oththinaal oththi kolal.
8.The intelligence brought by hearing them in hiding by a spy,
Should be compared with news brought by another spy and then only be accepted.
9.Oththothu unaraamai aalka udan moovar ,
Chol thokka thera padum.
9.Without a spy finding out another spoy should be sent ,
And if the news brought by three spies match, then only it should be accepted.
10.Chirappariya oththin kan cheyyarkka cheyyin,
Purapaduthaan aakum marai.
10.With others knowing do not honour a spy,,
If done , it is like king himself giving out information.