It is narrated from a group of Banu Salamah that once the Noble Prophet (peace and blessings be upon him) was sitting, when he took off his sewn clothes and said that a sacrificial animal had been sent, which would be marked today.
Hadith Referenceمسند احمد / مسند الأنصار رضي الله عنهم / 23613
Hadith Gradingحکم دارالسلام:إسناده ضعيف لضعف عبدالرحمن بن عطاء، ثم إنه قد اختلف عليه فى إسناده