(Sahih, related by Ahmad)
Hadhrat Abu Jaree Jaabir bin Saleem said: Are you the Messenger of Allah? The Holy Prophet (P.B.U.H) said: "I am Allah's Messenger, whom if an affliction touches you and you were to invoke Him, He removes it. And if a year of famine comes upon you and you invoke Him, He causes the crops to sprout for you. And if you were in a water-less desert and your she-camel strays and you invoke Him, He returns it to you."
We shouldn't hesitate in invoking Allah to assist us in the slightest of matters.