Hadithcore
Mishkat al-Masabih, 1071

Jabir reported God’s Messenger as saying, “Do not postpone prayer because of food or any other reason.” [Baihaqi] transmitted it in <i>Sharh as-sunna</i>.

وَعَنْ جَابِرٍ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «لَا تُؤَخِّرُوا الصَّلَاةَ لِطَعَامٍ وَلَا لغيره» . رَوَاهُ فِي شرح السّنة

References1 variant
In-Book Reference
Book 4, Hadith 489