And to every people did We authoritatively determine certain rites -of sacrifice- that they may use the sacred event to commemorate Allah's Name and perform the sacrifice under the immolation of His Name as a form of warm feeling of good will and gratitude for what He has provided for them of live stock reared for food. For indeed, your Allah is One and only. Therefore, conform your will to His will -in Islam-. Meanwhile, announce O Muhammad joyful tidings to those.