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.
tirmidhi:518al-Ḥasan b. ʿAlī al-Khalāal > ʿAbd al-Razzāq > Maʿmar > Thābit > Anas

"I saw the Prophet, after the Iqamah was called for Salat, talking to a man who was standing between him and the Qiblah, he did not stop talking, and I saw some of them getting sleepy from his lengthy standing the Prophet."  

Abū ʿĪsá said that this Ḥadīth is Ḥasan-Ṣaḥīḥ.
الترمذي:٥١٨حَدَّثَنَا الْحَسَنُ بْنُ عَلِيٍّ الْخَلاَّلُ حَدَّثَنَا عَبْدُ الرَّزَّاقِ أَخْبَرَنَا مَعْمَرٌ عَنْ ثَابِتٍ عَنْ أَنَسٍ قَالَ

لَقَدْ رَأَيْتُ النَّبِيَّ ﷺ بَعْدَ مَا تُقَامُ الصَّلاَةُ يُكَلِّمُهُ الرَّجُلُ يَقُومُ بَيْنَهُ وَبَيْنَ الْقِبْلَةِ فَمَا يَزَالُ يُكَلِّمُهُ فَلَقَدْ رَأَيْتُ بَعْضَنَا يَنْعَسُ مِنْ طُولِ قِيَامِ النَّبِيِّ ﷺ لَهُ  

قَالَ أَبُو عِيسَى هَذَا حَدِيثٌ حَسَنٌ صَحِيحٌ

See similar narrations below:

Collected by Aḥmad, Suyūṭī
ahmad:12642ʿAbd al-Razzāq > Maʿmar > Thābit al-Bunānī > Anas b. Mālik

[Machine] The prayer was being performed, then the Prophet ﷺ would speak to a man who had a need, so that man would stand between the Prophet ﷺ and the qibla and the Prophet ﷺ would continue speaking to him, and perhaps I saw some people dozing off due to the long stance of the Prophet ﷺ for him.  

أحمد:١٢٦٤٢حَدَّثَنَا عَبْدُ الرَّزَّاقِ حَدَّثَنَا مَعْمَرٌ عَنِ ثَابِتٍ الْبُنَانِيِّ عَنْ أَنَسِ بْنِ مَالِكٍ قَالَ

كَانَتِ الصَّلَاةُ تُقَامُ فَيُكَلِّمُ النَّبِيُّ ﷺ الرَّجُلَ فِي حَاجِةٍ تَكُونُ لَهُ فَيَقُومُ بَيْنَهُ وَبَيْنَ الْقِبْلَةِ فَمَا يَزَالُ قَائِمًايُكَلِّمُهُ فَرُبَّمَا رَأَيْتُ بَعْضَ الْقَوْمِ يَنْعَسُ مِنْ طُولِ قِيَامِ النَّبِيِّ ﷺ لَهُ  

suyuti:40-12b
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السيوطي:٤٠-١٢b

" كَانَتِ الصَّلاَةُ تُقَامُ فَيُكَلِّمُ الرَّجُلُ النَّبِىَّ ﷺ فِى الْحَاجَةِ تَكُونُ لَهُ فَيَقُومُ بَيْنَهُ وَبَيْنَ الْقِبْلَةِ فَمَا يَزَالُ قَائِمًا يُكَلِّمُهُ فَرُبَّمَا رَأَيْتُ بَعْضَ الْقَوْمِ يَنْعَسُ مِنْ طُولِ قِيَامِ النَّبِىِّ ﷺ ".  

[عب] عبد الرازق عن أنس
suyuti:85-73b
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السيوطي:٨٥-٧٣b

" كَانَتِ الصلاَةُ تُقَامُ فَيُكَلِّمُ الرجلُ النَّبِىَّ ﷺ فِى الحَاجَةِ تَكُونُ لَهُ فَيَقُومُ بَينَهُ وَبَيْنَ القِبْلَةِ فَمَا يَزَالُ قَائِمًا يُكَلِّمُهُ فَربَّمَا رَأيْتُ بَعضَ القَوْم يَنْعَسُ مِنْ طُولِ قِيَام النبِيّ ﷺ ".  

[عب] عبد الرازق وأبو الشيخ في الأذان