Once a merchant's ship was sailing in the ocean. One of the travellers therein used to recite Durood daily. One day he saw a fish was swimming along the ship and listening to Durood. Later on that fish happened to be caught by a hunter who sold it in the market and a Companion of one Wali Allah bought it. His wife tried her best to cook the fire in the fire-place failed. At last the Companion went to Wali Allah and told him what had transpired. Wali Allah affirmed that even hell-fire could not burn that fish because it had been listening Durood.
(Wa'az-e-Benazir; p.22)
