Sunan Ibn Majah, Chapter: The Chapters on Pawning

that the Prophet (saw) heard some sounds and said: "What is this noise?" They said: "Palm trees that are being pollinated." He said: "If they did not do that it would be better." So they did not pollinate them that year, and the dates did not mature properly. They mentioned that to the Prophet (saw) and he said: "If it is one of the matters of your religion, then refer to me."