Which Supplication Should Be Recited in Rukū‘ and Sujūd?

Hadith of ʿĀ’ishah رضي الله عنها​

Hadith:
عن عائشة رضي الله عنها ، قالت: كان رسول الله صلى الله عليه وسلم يكثر أن يقول فى ركوعه وسجوده: (سبحانك اللهم [ربنا] وبحمدك اللهم اغفر لي )
ʿĀ’ishah رضي الله عنها narrated:
“The Messenger of Allah ﷺ would frequently say in his rukū‘ and sujūd:
‘Subḥānaka Allāhumma [Rabbana] wa bi ḥamdik, Allāhumma ighfir lī’
(Glory is to You, O Allah, our Lord, and with Your praise. O Allah, forgive me.)”
She further said: "He would explain the Qur’an through his actions."
This Hadith is agreed upon (Muttafaq ʿalayh).

References: Bukhari: 817, 794 | Muslim: 484
Mentioned in:

• Sahih Muslim, Book: What is to be said in Rukū‘ and Sujūd, vol. 2, p. 49
• Sahih Bukhari, Book: Supplication in Rukū‘, vol. 1, p. 95
  

❖ Key Benefits and Rulings​

➊ The supplication:
"Subḥānaka Allāhumma Rabbana wa bi ḥamdik, Allāhumma ighfir lī"
is permissible and should be frequently recited during rukū‘ and sujūd.

This content is derived from the book "Ḍiyā’ al-Islām fī Sharḥ al-Imām bi-Aḥādīth al-Aḥkām" by Shaykh Taqī al-Dīn Abī al-Fatḥ, translated by Maulana Mahmood Ahmad Ghaznfar.