Surah 108. Al-Kauthar, Ayah 2

He who grants these blessings is Allah, and to Allah alone must we turn in adoration and thanksgiving, and in sacrifice. Nahr=sacrifice: in a restricted ritual sense, the sacrifice of camels: see n. 2813 to xxii. 36. But the ritual is a mere Symbol. Behind it is a deep spiritual meaning: the meat slaughtered feeds the poor, and the slaughter is a symbol of the self-sacrifice in our hearts. "It is not their meat nor their blood, that reaches Allah: it is your piety that reaches Him" (xxii. 37).