«من صلى صلاتنا ونسك نسكنا فقد أصاب النسك ومن نسك قبل الصلاة فلا نسك له»
The Prophet (peace and blessings be upon him) said:
"Whoever prays our prayer and offers the sacrifice according to our way has made his sacrifice correctly; and whoever sacrifices before the prayer, there is no sacrifice for him."
Hadith Referenceصحیح الجامع الصغیر / حرف الميم / 6351