What is the ruling on assigning specific supplications to each ten-day period of Ramadan?

The questioner : Honorable Shaykh, this is a paper that has been circulated among the people. This is a paper that has been circulated among the people.

The Shaykh : In questions?

The questioner : All right, bring this question, O Shaykh. It says: The supplication for the first ten days of Ramadan is: “I bear witness that there is no god but Allah, and I seek Allah’s forgiveness. O Allah, I ask You for Paradise and I seek refuge in You from the Fire.” The supplication for the second ten days is: “O Allah, I ask You by Your mercy, which encompasses all things, to forgive me.” The supplication for the third ten days is: “O Allah, You are the Pardoner, the Generous, and You love to pardon, so pardon me.”

The Shaykh : I say that these supplications, in themselves, are correct and there is nothing wrong with them, but assigning them to the first ten days, then the second ten days, and then the third ten days is an error, for these supplications are to be made at all times.