It is narrated from Sayyiduna Ibn Abbas (may Allah be pleased with them both) that once the Prophet (peace and blessings be upon him) ate the meat of the shoulder, then performed the prayer with the previous ablution without renewing it.
Hadith Referenceمسند احمد / ومن مسند بني هاشم / 2188
Hadith Gradingحکم دارالسلام:حديث صحيح، وهذا إسناد ضعيف، محمد بن سيرين لم يسمع من ابن عباس