A short explanation of each transaction is written under each entry which is called narration. The subject matter of the transaction can be ascertained through narration. Besides this, if there be any mistake in determining debit or credit aspect of a transaction, it can be easily detected from narration. "A journal entry is not complete without narration".
For e.g. Purchase of Furniture from Tendulkar for Rs 25,000
The Journal will look like this
Furniture A/c Dr 25,000
To Tendulkar A/c 25,000
(Being the cost of Furniture (Dining Chair, table purchased on dateā¦)this is the narration and the more we capture here, it helps when we do an audit on a later date.