Sahih al-Bukhari 213
Narrated Anas:
The Prophet ﷺ said, "If anyone of you feels drowsy while praying, he should sleep till he understands what he is saying (reciting)."
حَدَّثَنَا أَبُو مَعْمَرٍ، قَالَ حَدَّثَنَا عَبْدُ الْوَارِثِ، حَدَّثَنَا أَيُّوبُ، عَنْ أَبِي قِلاَبَةَ، عَنْ أَنَسٍ، عَنِ النَّبِيِّ ﷺ قَالَ
" إِذَا نَعَسَ أَحَدُكُمْ فِي الصَّلاَةِ فَلْيَنَمْ حَتَّى يَعْلَمَ مَا يَقْرَأُ ".
Classification
Sahih (Authentic)
References
Sahih al-Bukhari 213
Sahih al-Bukhari Vol. 1, Book of Ablutions (Wudu), Hadith 212