Narrated Um Salama: The Prophet vowed to keep aloof from his wives for a period of one month, and after the completion of 29 days he went either in the morning or in the afternoon to his wives. Someone said to him "You vowed that you would not go to your wives for one month." He replied, "The month is of 29 days."
Hadith Referenceصحيح البخاري / كتاب الصوم / 1910
Hadith Gradingمحدثین:أحاديث صحيح البخاريّ كلّها صحيحة
'A'isha reported: The Messenger of Allah (ﷺ) (may peace be upon him') often said while bowing and prostrating himself: "Glory be to Thee, O Allah, our Lord, and praise be to Thee, O Allah, forgive me," thus complying with the (command in) the Qur'an.
Shaykh Maulana Abdul Aziz Alvi
Hadith Commentary:Benefits and Issues: In Surah Nasr, the following command was given to you (sallallahu alayhi wa sallam): ﴿فَسَبِّحْبِحَمْدِرَبِّكَوَاسْتَغْفِرْهُ﴾ "So glorify the praises of your Lord and seek His forgiveness." In compliance with this command, you (sallallahu alayhi wa sallam) used to say these words during bowing (ruku) and prostration (sujud), and in following and emulating you (sallallahu alayhi wa sallam), we should also say these words in prostration and bowing.
Source: Tuhfat al-Muslim: Commentary on Sahih Muslim, Page: 1085