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:3009Abū ʿAbdullāh al-Ḥāfiẓ > ʿAlī b. ʿĪsá b. Ibrāhīm al-Ḥīrī > Ibrāhīm b. Abū Ṭālib > ʿUbayd al-Habbārī > Abū Usāmah > Hishām b. ʿUrwah from his father > ʿĀʾishah

[Machine] This verse (and do not make your prayer loud nor completely silent) [Surah Al-Isra 110] was revealed regarding supplication.  

البيهقي:٣٠٠٩وَأَخْبَرَنَا أَبُو عَبْدِ اللهِ الْحَافِظُ أنبأ عَلِيُّ بْنُ عِيسَى بْنِ إِبْرَاهِيمَ الْحِيرِيُّ ثنا إِبْرَاهِيمُ بْنُ أَبِي طَالِبٍ ثنا عُبَيْدٌ الْهَبَّارِيُّ ثنا أَبُو أُسَامَةَ عَنْ هِشَامِ بْنِ عُرْوَةَ عَنْ أَبِيهِ عَنْ عَائِشَةَ ؓ قَالَتْ

نَزَلَتْ يَعْنِي هَذِهِ الْآيَةَ {وَلَا تَجْهَرْ بِصَلَاتِكَ وَلَا تُخَافِتْ بِهَا} [الإسراء 110] فِي الدُّعَاءِ  

رَوَاهُ الْبُخَارِيُّ فِي الصَّحِيحِ عَنْ عُبَيْدِ بْنِ إِسْمَاعِيلَ وَرَوَاهُ مُسْلِمٌ عَنْ أَبِي بَكْرِ بْنِ أَبِي شَيْبَةَ عَنْ أَبِي أُسَامَةَ وَكَذَلِكَ قَالَ مُجَاهِدٌ فِي الدُّعَاءِ وَالْمَسْأَلَةِ