And similarly, We raised them that they might question among them. Said a speaker among them, "How long have you remained?" They said, "We have remained a day or a part (of) a day." They said, "Your Lord knows best how long you have remained. So send one of you with silver coin of yours this to the city, and let him see which is the purest food, and let him bring to you provision from it, and let him be cautious. And not make aware about you anyone."