Sahih Muslim

Sahih Muslim 2704 d

It Is Recommend To Lower One's Voice When Saying Remembrance, Except In The Cases Where It Is Commanded To Raise The Voice Such As The Talbiyah Etc. It Is Recommend To Say A Great Deal, "There Is No Power And No Strength Except With Allah"
Arabic hadith text
وَحَدَّثَنَاهُ مُحَمَّدُ بْنُ عَبْدِ الأَعْلَى، حَدَّثَنَا الْمُعْتَمِرُ، عَنْ أَبِيهِ، حَدَّثَنَا أَبُو عُثْمَانَ، عَنْ أَبِي مُوسَى، قَالَ بَيْنَمَا رَسُولُ اللَّهِ صلى الله عليه وسلم فَذَكَرَ نَحْوَهُ ‏.‏
Translation

This hadith has been transmitted on the authority of Abu Musa with a slight variation of wording.