Abu Ya'fur said: I asked my companion Abdullah bin Abi Awfa (may Allah be pleased with him) about locusts, and he said: There is no harm in it; we were with the Messenger of Allah (peace and blessings be upon him) in seven expeditions, and we used to eat locusts.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصيد والذبائح / 18992