Sunan an-Nasa'i
Sunan an-Nasa'i 756
أَخْبَرَنَا قُتَيْبَةُ، عَنْ مَالِكٍ، عَنْ أَبِي النَّضْرِ، عَنْ بُسْرِ بْنِ سَعِيدٍ، أَنَّ زَيْدَ بْنَ خَالِدٍ، أَرْسَلَهُ إِلَى أَبِي جُهَيْمٍ يَسْأَلُهُ مَاذَا سَمِعَ مِنْ، رَسُولِ اللَّهِ صلى الله عليه وسلم يَقُولُ فِي الْمَارِّ بَيْنَ يَدَىِ الْمُصَلِّي فَقَالَ أَبُو جُهَيْمٍ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " لَوْ يَعْلَمُ الْمَارُّ بَيْنَ يَدَىِ الْمُصَلِّي مَاذَا عَلَيْهِ لَكَانَ أَنْ يَقِفَ أَرْبَعِينَ خَيْرًا لَهُ مِنْ أَنْ يَمُرَّ بَيْنَ يَدَيْهِ " .
Unreviewed translation. All hadiths in this collection are available in five languages. Titles and introductions may remain in Arabic.
Qutaybah narrated to us from Malik, from Abu An-Nadr, from Busr ibn Sa‘id, that Zayd ibn Khalid sent him to Abu Juhaim to ask what he had heard the Messenger of Allah ﷺ say about someone passing in front of a person praying. Abu Juhaim said: The Messenger of Allah ﷺ said, 'If the person passing in front of someone praying knew what burden he incurs, standing for forty would be better for him than passing in front of that person.'
Notes and open questions — unreviewed
The report says forty without specifying a unit.