Musnad Ahmad 1060:11

Haywah ibn Shurayh narrated to us, Baqiyyah narrated to us, Buhayr ibn Sa’d narrated to me, from Khalid ibn Ma’dan, from al-Miqdam ibn Ma’di Karib, from Abu Ayyub al-Ansari, that the Prophet, peace and blessings of Allah be upon him, said: "Measure your food, and it will be blessed for you."