It is narrated from Sayyiduna Abu Ayyub (may Allah be pleased with him) that a man used to sacrifice a single sheep on behalf of himself and his household; then people began to vie with one another in boasting, so it became merely a matter of boasting and rivalry.
Imam al-Tabarani (may Allah have mercy on him) said: "No one narrated this hadith from Malik, from al-Zuhri, except Abdullah; Ahmad bin Ubaydullah is alone in narrating it."
Hadith Referenceالمعجم الأوسط / باب العين / 4085
Hadith Takhrij«أخرجه مالك فى «الموطأ» برقم: 1770، والترمذي فى «جامعه» برقم: 1505، وابن ماجه فى «سننه» برقم: 3147، والبيهقي فى «السنن الكبرى» برقم: 19121، والطبراني فى «الكبير» برقم: 3919، 3920، 3981»