Sayyiduna Abu al-Darda' (may Allah be pleased with him) narrates this saying of the Prophet (peace and blessings be upon him): "Measure your food grain, and there will be blessing for you in it."
Imam al-Tabarani recorded it. Its chain contains a narrator, Abu Bakr bin Abi Maryam, and he is da'if (weak) because he suffered from confusion (ikhtilat).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الأطعمة / 7974