It is narrated from Sayyiduna Abu Bakr al-Siddiq (may Allah be pleased with him) that when this blessed verse was revealed to the Prophet (peace and blessings be upon him): "Indeed, those who lower their voices in the presence of the Messenger of Allah" [Surah al-Hujurat: 3], Sayyiduna Abu Bakr (may Allah be pleased with him) said (out of respect and reverence for it): "I have made a sworn pledge that I will speak to the Prophet (peace and blessings be upon him) only like one who whispers a secret (in an extremely soft and low voice)."
Imam al-Bazzar recorded this report in his Musnad; however, the imams of narrator criticism have declared the narrator in its chain, Husayn bin Umar, da'if (weak).
Hadith Referenceالمطالب العالية بزوائد المسانيد الثمانية / كتاب المناقب / 3862
Hadith Gradingمحدثین:إسناده ضعيف جدًا
Hadith Takhrij«حکم الحدیث المطالب العالیہ محققاً تنسیق د. سعد بن ناصر بن عبد العزيز الشَّثري- مکتبہ شاملہ :إسناده ضعيف جدًا » «أخرجه المستدرك للحاكم برقم: 4475، وأخرجه مسند البزار برقم: 56، وأخرجه مصنف ابن أبي شيبة برقم: 35576»