(127) باب الاِطْمَأْنِينَةِ حِينَ يَرْفَعُ رَأْسَهُ مِنَ الرُّكُوعِ
Narrated Al-Bara':
The bowing, the prostrations, the period of standing after bowing and the interval between the two prostrations of the Prophet (ﷺ) used to be equal in duration .
Reference: Sahih al-Bukhari 801
In-book reference: Book 10, Hadith 196
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 1, Book 12, Hadith 766