Ali bin Husayn (may Allah have mercy on him) said to a caretaker of his who had harvested his date palms at night: Do you not know that the Messenger of Allah (peace and blessings be upon him) forbade cutting fruit at night and plucking fruit at night? Or he said: and harvesting at night. Sufyan (may Allah have mercy on him) said: It is said: (it should be) so that it is done in the daytime and the poor are present.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الضحايا / 19200