Sahih Muslim
Sahih Muslim 559 a
It is disliked to offer salat in the presence of food that one wants to eat. It is disliked to offer salat while restraining the urge to relieve oneself, and so on
Arabic hadith text
حَدَّثَنَا ابْنُ نُمَيْرٍ، حَدَّثَنَا أَبِي ح، قَالَ وَحَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، - وَاللَّفْظُ لَهُ - حَدَّثَنَا أَبُو أُسَامَةَ، قَالاَ حَدَّثَنَا عُبَيْدُ اللَّهِ، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم "إِذَا وُضِعَ عَشَاءُ أَحَدِكُمْ وَأُقِيمَتِ الصَّلاَةُ فَابْدَءُوا بِالْعَشَاءِ وَلاَ يَعْجَلَنَّ حَتَّى يَفْرُغَ مِنْهُ " .
Translation
Ibn 'Umar reported
The Messenger of Allah (ﷺ) said: When the supper is served to any one of you and the prayer also begins. (in such a case) first take supper, and do not make haste (for prayer) till you have (taken the food).