Isha Vasyam Idam Sarvam,

Yat Kincha Jagatyam Jagat,

Tena Tyaktena Bhunjitha,

Ma Grdhah Kasya Svid Dhanam.

Everything animate or inanimate that is within the universe is controlled and owned by the Lord. One should therefore accept only those things necessary for himself, which are set aside for his quota, and one should not accept other things, knowing well to whom they belong.

-- Translation by His Divine Grace A.C. Bhakti Vedanta Swami Prabhupada.