Kural - 675

Treasure and instrument and time and deed and place of act
These five, till every doubt remove, think o'er with care exact

Explanation
Do an act after a due consideration of the (following) five, viz money, means, time, execution and place.

Tamil Transliteration
Porulkaruvi Kaalam Vinaiyitanotu Aindhum
Iruldheera Ennich Cheyal.