It was the practice of the Prophet (peace and blessings be upon him):
"He (peace and blessings be upon him) would recite this verse of poetry as an illustration: And news will be brought to you by one whom you did not provision (to bring it)."
Hadith Referenceصحیح الجامع الصغیر / حرف الكاف / 4905
Hadith Gradingالألبانی:صحيح
Hadith Takhrij[طب] عن ابن عباس [ت] عن عائشة. الصحيحة ٢٠٥٧: البزار، الضياء - ابن عباس. حم، خد، الطحاوي، حل - عائشة.