The Narendra Modi- Nitish Kumar spat continues to grow uglier as the Bihar Chief Minister has now turned down the Rs 5 crore cheque given by the Gujarat government for Kosi flood relief.The tiff began over the Gujarat government publishing an advertisement on the heavy donations it made to the Bihar flood relief and it snowballed over some Bihar dailies published photographs of Nitish Kumar and Narendra Modi holding hands in show of solidarity in another advertisement.