Mishkat al-Masabih 13 Marriage كتاب النكاح 140

وَعَنْ عَبْدِ اللَّهِ بْنِ عُمَرَ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «مَنْ دُعِيَ فَلَمْ يُجِبْ فَقَدْ عَصَى اللَّهَ وَرَسُولَهُ وَمن دخل على غَيْرِ دَعْوَةٍ دَخَلَ سَارِقًا وَخَرَجَ مُغِيرًا» . رَوَاهُ أَبُو دَاوُد

‘Abdallah b. ‘Umar reported God’s Messenger as saying, “He who does not accept an invitation which he receives has disobeyed God and His Messenger, and he who enters without an invitation enters as a thief and goes out as a raider.” Abu Dawud transmitted it.