Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
bayhaqi:5040Abū al-Ḥasan ʿAlī b. Aḥmad b. ʿAbdān > Aḥmad b. ʿUbayd al-Ṣaffār > al-Ḥasan b. al-ʿAbbās b. Mihrān al-Ḥammāl > Sūwayd b. Saʿīd > Ḥafṣ b. Maysarah > Mūsá b. ʿUqbah > Nāfiʿ > Ibn ʿUmar

[Machine] The Messenger of Allah ﷺ said, "When one of you is eating, he should not rush until he has satisfied his need from it, even if the prayer is established." And he said this with this wording.  

البيهقي:٥٠٤٠وَأَخْبَرَنَا أَبُو الْحَسَنِ عَلِيُّ بْنُ أَحْمَدَ بْنِ عَبْدَانَ أنبأ أَحْمَدُ بْنُ عُبَيْدٍ الصَّفَّارُ حَدَّثَنِي الْحَسَنُ بْنُ الْعَبَّاسِ بْنِ مِهْرَانَ الْحَمَّالُ ثنا سُوَيْدُ بْنُ سَعِيدٍ ثنا حَفْصُ بْنُ مَيْسَرَةَ عَنْ مُوسَى بْنِ عُقْبَةَ عَنْ نَافِعٍ عَنِ ابْنِ عُمَرَ

أَنَّ رَسُولَ اللهِ ﷺ قَالَ إِذَا كَانَ أَحَدُكُمْ عَلَى الطَّعَامِ فَلَا يَعْجَلَنَّ حَتَّى يَقْضِيَ حَاجَتَهُ مِنْهُ وَإِنْ أُقِيمَتِ الصَّلَاةُ وَبِهَذَا اللَّفْظِ  

رَوَاهُ زُهَيْرُ بْنُ مُعَاوِيَةَ وَوَهْبُ بْنُ عُثْمَانَ عَنْ مُوسَى بْنِ عُقْبَةَ وَأَشَارَ الْبُخَارِيُّ إِلَى رِوَايَتِهِمَا

See similar narrations below:

Collected by Bukhārī
bukhari:674Zuhayr And Wahb b. ʿUthmān > Mūsá b. ʿUqbah > Nāfiʿ > Ibn ʿUmar

The Prophet ﷺ said, "If anyone of you is having his meals, he should not hurry up till he is; satisfied even if the prayer has been started."  

البخاري:٦٧٤وَقَالَ زُهَيْرٌ وَوَهْبُ بْنُ عُثْمَانَ عَنْ مُوسَى بْنِ عُقْبَةَ عَنْ نَافِعٍ عَنِ ابْنِ عُمَرَ قَالَ

قَالَ النَّبِيُّ ﷺ إِذَا كَانَ أَحَدُكُمْ عَلَى الطَّعَامِ فَلاَ يَعْجَلْ حَتَّى يَقْضِيَ حَاجَتَهُ مِنْهُ وَإِنْ أُقِيمَتِ الصَّلاَةُ رَوَاهُ إِبْرَاهِيمُ بْنُ الْمُنْذِرِ عَنْ وَهْبِ بْنِ عُثْمَانَ وَوَهْبٌ مَدِينِيٌّ