(16) باب الأَمْرِ بِإِجَابَةِ الدَّاعِي إِلَى دَعْوَةٍ
Ibn Umar (Allah be pleased with him) reported that Allah's Messenger (ﷺ) said:
When any one of you is invited to a feast, he should attend it.
Reference: Sahih Muslim 1429 a
In-book reference: Book 16, Hadith 112
USC-MSA web (English) reference(deprecated numbering scheme): Book 8, Hadith 3337