Polity (பொருட்பால்) — Friendship (நட்பியல்) — Unreal Friendship (கூடாநட்பு)

Kural 821:
சீரிடம் காணின் எறிதற்குப் பட்டடை
நேரா நிரந்தவர் நட்பு.
seeritam kaaNin eRidhaRkup pattadai
naeraa nirandhavar natpu
English couplet:
Anvil where thou shalt smitten be, when men occasion find,
Is friendship's form without consenting mind.
Explanation: The friendship of those who behave like friends without inward affection is a weapon that may be thrown when a favourable opportunity presents itself.

Kural 822:
இனம்போன்று இனமல்லார் கேண்மை மகளிர்
மனம்போல வேறு படும்.
inampoandru inamallaar kaeNmai makaLir
manampoala vaeRu padum
English couplet:
Friendship of those who seem our kin, but are not really kind.
Will change from hour to hour like woman's mind.
Explanation: The friendship of those who seem to be friends while they are not, will change like the love of women.

Kural 823:
பலநல்ல கற்றக் கடைத்து மனநல்லர்
ஆகுதல் மாணார்க் கரிது.
palanhalla katrak kataiththu mananhallar
aakudhal maaNaark karidhu
English couplet:
To heartfelt goodness men ignoble hardly may attain,
Although abundant stores of goodly lore they gain.
Explanation: Though (one's) enemies may have mastered many good books, it will be impossible for them to become truly loving at heart.

Kural 824:
முகத்தின் இனிய நகாஅ அகத்தின்னா
வஞ்சரை அஞ்சப் படும்.
mukaththin iniya nakaaa akaththinnaa
vanjarai anjap padum
English couplet:
'Tis fitting you should dread dissemblers' guile,
Whose hearts are bitter while their faces smile.
Explanation: One should fear the deceitful who smile sweetly with their face but never love with their heart.

Kural 825:
மனத்தின் அமையா தவரை எனைத்தொன்றும்
சொல்லினால் தேறற்பாற்று அன்று.
manaththin amaiyaa thavarai enaiththondrum
sollinaal thaeRaRpaatru andru
English couplet:
When minds are not in unison, 'its never; just,
In any words men speak to put your trust.
Explanation: In nothing whatever is it proper to rely on the words of those who do not love with their heart.

Kural 826:
நட்டார்போல் நல்லவை சொல்லினும் ஒட்டார்சொல்
ஒல்லை உணரப் படும்.
nattaarpoal nallavai sollinum ottaarsol
ollai uNarap padum
English couplet:
Though many goodly words they speak in friendly tone,
The words of foes will speedily be known.
Explanation: Though (one's) foes may utter good things as though they were friends, once will at once understand (their evil, import).

Kural 827:
சொல்வணக்கம் ஒன்னார்கண் கொள்ளற்க வில்வணக்கம்
தீங்கு குறித்தமை யான்.
solvaNakkam onnaarkaN koLLaRka vilvaNakkam
theengu kuRiththamai yaan
English couplet:
To pliant speech from hostile lips give thou no ear;
'Tis pliant bow that show the deadly peril near! .
Explanation: Since the bending of the bow bespeaks evil, one should not accept (as good) the humiliating speeches of one's foes.

Kural 828:
தொழுதகை யுள்ளும் படையொடுங்கும் ஒன்னார்
அழுதகண் ணீரும் அனைத்து.
thozhudhakai yuLLum padaiyotungum onnaar
azhudhakaN Neerum anaiththu
English couplet:
In hands that worship weapon ten hidden lies;
Such are the tears that fall from foeman's eyes.
Explanation: A weapon may be hid in the very hands with which (one's) foes adore (him) (and) the tears they shed are of the same nature.

Kural 829:
மிகச்செய்து தம்மெள்ளு வாரை நகச்செய்து
நட்பினுள் சாப்புல்லற் பாற்று.
mikachcheydhu thammeLLu vaarai nakachcheydhu
natpinuL saappullaR paatru
English couplet:
'Tis just, when men make much of you, and then despise,
To make them smile, and slap in friendship's guise.
Explanation: It is the duty of kings to affect great love but make it die (inwardly); as regard those foes who shew them great friendship but despise them (in their heart).

Kural 830:
பகைநட்பாம் காலம் வருங்கால் முகநட்டு
அகநட்பு ஒரீஇ விடல்.
pakainhatpaam kaalam varungaal mukanhattu
akanhatpu oreei vidal
English couplet:
When time shall come that foes as friends appear,
Then thou, to hide a hostile heart, a smiling face may'st wear.
Explanation: When one's foes begin to affect friendship, one should love them with one's looks, and, cherishing no love in the heart, give up (even the former).