Section 106
Reasonable time of giving notice of dishonour
Chapter 10: Of reasonable time
If the holder and the party to whom notice of dishonour is given carry on business or live (as the case may be) in different places, such notice is given within a reasonable time if it is dispatched by the next post or on the day next after the day of dishonour. If the said parties carry on business or live in the same place, such notice is given within a reasonable time if it is dispatched in time to reach its destination on the day next after the day of dishonour.
The Negotiable Instruments Act, 1881 (Act No. 26 of 1881). From the updated text on India Code, with later amendments. Being checked against the official copy; amendment notes are not shown yet.