(16) باب الأَمْرِ بِإِجَابَةِ الدَّاعِي إِلَى دَعْوَةٍ
Ibn 'Umar (Allah be pleated with them) reported Allah's Messenger (ﷺ) having said:
He who is invited to a wedding feast or like it, he should accept it.
Reference: Sahih Muslim 1429 f
In-book reference: Book 16, Hadith 117
USC-MSA web (English) reference(deprecated numbering scheme): Book 8, Hadith 3342