(2) باب سِنِّ الأُضْحِيَةِ
Jabir b. 'Abdullah reported:
Allah's Messenger (ﷺ) led us in the 'Id prayer in Medina on the Day of Sacrifice. Some persons slaughtered their animals ahead of him under the impression that Allah's Apostle (ﷺ) had-already offered sacrifice. Thereupon Allah's Apostle (ﷺ) said: Those who had slaughtered their animals ahead of him should slaughter the other ones in their stead. And they should not sacrifice the animal before Allah's Messenger (ﷺ) had sacrificed (his animal)
Reference: Sahih Muslim 1964
In-book reference: Book 35, Hadith 20
USC-MSA web (English) reference(deprecated numbering scheme): Book 22, Hadith 4837