Hadith 7.92.2

7.92.2:
Narrated Anas bin Malik: "Whenever the Prophet passed by (my
mother Um−Sulaim) he used to enter her and greet her. Anas
further said: Once the Prophet way a bridegroom during his
marriage with Zainab, Um Sulaim said to me, "Let us give a
gift to Allah's Apostle ." I said to her, "Do it." So she
prepared Haisa (a sweet dish) made from dates, butter and
dried yoghurt and she sent it with me to him. I took it to him
and he said, "Put it down," and ordered me to call some men
whom he named, and to invite whomever I would meet. I did what
he ordered me to do, and when I returned, I found the house
crowded with people and saw the Prophet keeping his hand over
the Haisa and saying over it whatever Allah wished (him to
say). Then he called the men in batches of ten to eat of it,
and he said to them, "Mention the Name of Allah, and each man
should eat of the dish the nearest to him." When all of them
had finished their meals, some of them left and a few remained
there talking, over which I felt unhappy. Then the Prophet
went out towards the dwelling places (of his wives) and I too,
went out after him and told him that those people had left.
Then he returned and entered his dwelling place and let the
curtains fall while I was in (his) dwelling place, and he was
reciting the Verses:−− 'O you who believe! Enter not the
Prophet's house until leave is given you for a meal, (and
then) not (as early as) to what for its preparation. But when
you are invited, enter, and when you have taken your meals,
disperse without sitting for a talk. Verily such (behavior)
annoys the Prophet; and he would be shy of (asking) you (to
go), but Allah is not shy of (telling you) the Truth.' (33−53)
Abu `Uthman said: Anas said, "I served the Prophet for ten
years."