Hadithcore
Sahih Muslim, 447 a
sahih

'A'isha reported that so far as these words of (Allah) Glorious and High are concerned:

" And utter not your prayer loudly, not be low in it" (xvii. 110) relate to supplication (du'a').

حَدَّثَنَا يَحْيَى بْنُ يَحْيَى، أَخْبَرَنَا يَحْيَى بْنُ زَكَرِيَّاءَ، عَنْ هِشَامِ بْنِ عُرْوَةَ، عَنْ أَبِيهِ، عَنْ عَائِشَةَ، فِي قَوْلِهِ عَزَّ وَجَلَّ ‏{‏ وَلاَ تَجْهَرْ بِصَلاَتِكَ وَلاَ تُخَافِتْ بِهَا‏}‏ قَالَتْ أُنْزِلَ هَذَا فِي الدُّعَاءِ ‏.‏

References2 variants
In-Book Reference
Book 4, Hadith 164
USC-MSA web (English) reference
Book 4, Hadith 898 (deprecated numbering scheme)
Related hadiths1
Compare isnād across 1 related chains →