The polytheists of Mecca forced Holy Prophet (s.a.w.a.) to take
shelter in the valley of Abu Talib. They made their people
guard the entrance of the valley so that the food etc. does not
reach the Muslims in the valley. The companions of Holy
Prophet (s.a.w.a.) were disgusted by the situation. They
complained to Holy Prophet (s.a.w.a.) about the situation. If
Holy Prophet (s.a.w.a.) would pray, Allah would have send
heavenly food for them like He had sent for Bani Israel and He
would have given them whatever they desired. When they
complained to Prophet (s.a.w.a.), he (s.a.w.a.) pointed towards
the mountain and ordered it to go far. The mountains became
far and a vast land was visible till the vision could reach. He
(s.a.w.a.) with his hand indicated and said “Whatever Allah has
hidden in you, the trees, the fruits, the flowers and the greenery etc, you remove it. The desert became as Holy Prophet
(s.a.w.a.) had ordered. There were many rivulets, fruits bearing
trees, greenery was spread. Bounties which never any king got
it. The companions ate the fruits, drank the water of the
streams and thanked Allah for the bounties.
When their clothes became dirty, they turned towards Holy
Prophet (s.a.w.a.), he (s.a.w.a.) said,
“Recite salawaat on me and my progeny and blow
on your dress and wipe your hand on the dress.
The dress will become clean and pure and sorrow
will be removed from your hearts.”
They did the same, their dresses became clean and pure, the
dirt from their bodies vanished and their health became free
from worries and sorrow. They use to say how strange it is that
we recited salawaat on you and your progeny, we became
clean and pure. He (s.a.w.a) said by reciting salawaat your
heart is cleansed from malice, your sins are forgiven as the
clothes are made clean. Nay! More than your clothes you are
made pure from your sins and your good deeds become more
shining (noorani).
Ref : Fazila e Salawaat