Sunan Abi Dawud 861
سنن أبي داود#861SahihRifa’ah b. Rafi has also narrated this tradition through a different chain from the Messenger of Allah(ﷺ). This version goes:Then perform ablution in a way Allah, the exalted, has command you, then say the shahadah and get up and say the takbir. Then if you know any of the Qur’an, recite it; otherwise say: “Praise be to Allah”; “Allah is most great”; “ There is no god but Allah” He ( the narrator) also said in this version: If some defect remains in this, that detect will remain in your prayer
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Muhammad Muhyi Al-Din Abdul HamidSahih
Zubair Ali ZaiIsnaad Sahih
In-book reference: 2:471