(19) باب مَا يَفْعَلُ الضَّيْفُ إِذَا تَبِعَهُ غَيْرُ مَنْ دَعَاهُ صَاحِبُ الطَّعَامِ وَاسْتِحْبَابُ إِذْنِ صَاحِبِ الطَّعَامِ لِلتَّابِعِ
Anas reported that Allah's Messenger (ﷺ) had a neighbour who was Persian (by descent), and he was expert in the preparation of soup. He prepared (soup) for Allah's Messenger (ﷺ) and then came to him to invite him (to that feast). He (Allah's Messenger) said:
Here is 'A'isha also (and you should also invite her to the food). He said: No. Thereupon Allah's Messenger (ﷺ) also said: No (then I cannot join the feast). He returned inviting him, and Allah's Messenger (ﷺ) said: She is also there (i. e. 'A'isha should also be invited). He said: No. Thereupon Allah's Messenger (ﷺ) also said: No (and declined his offer). He returned again to invite him and Allah's Messenger (ﷺ) again said: She is also there. He (the host) said:" Yes" for the third time. Then he accepted his invitation, and both of them set out until they came to his house.
Reference: Sahih Muslim 2037
In-book reference: Book 36, Hadith 186
USC-MSA web (English) reference(deprecated numbering scheme): Book 23, Hadith 5054