Sayyiduna Ubadah bin al-Samit (may Allah be pleased with him) said that when the Messenger of Allah (peace and blessings be upon him) raided the land of the enemy, he would give a "quarter," and when he came back and the people were exhausted, he would give the people a "third." He (peace and blessings be upon him) disliked the extra awards (anfal) and would say: "Let the strong among the believers return (it) to the weak among them."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب قسم الفيء والغنيمة / 12814