Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
bayhaqi:8895al-Qāsim > Ibn ʿUmar

[Machine] He said, "Only the camel or the cow is sufficient as a sacrifice."  

البيهقي:٨٨٩٥وَبِهَذَا الْإِسْنَادِ عَنِ الْقَاسِمِ عَنِ ابْنِ عُمَرَ

أَنَّهُ قَالَ مَا اسْتَيْسَرَ مِنَ الْهَدْيِ الْبَعِيرُ أَوِ الْبَقَرَةُ