Saying 'We are lined up and obedient,' and 'We have asked Allah for help,' in Salah

Q 4: Whenever the Imam (the one who leads congregational Prayer) says: "Line up and straighten your rows", some praying persons say: "We are lined up and obedient." When the Imam says: You (Alone) we worship, and You (Alone) we ask for help (for each and everything). , the Ma'mums (people being led by an Imam in Prayer) say: "We've asked Allah for help." When the Imam pronounces Taslim (salutation of peace ending the Prayer), they gently pat their thighs with their hands and offer Taslim. I want to know if this is authentically reported from the Sunnah (acts, sayings or approvals of the Prophet). In other words, did the Prophet (peace be upon him) do this? Does this have any origin in Shari`ah (Islamic law)?

A 4: It is impermissible to say : "We are lined up and obedient", because there is no supporting evidence. Moreover, it is impermissible to say: "We asked Allah for help" when the Imam recites the Ayah (Qur'anic verse) where Allah (Exalted be He) says: You (Alone) we worship, and You (Alone) we ask for help (for each and everything). This is impermissible because it was not reported from the Prophet (peace be upon him). As for striking the thighs with the hands when offering Taslim, it is a Bid`ah (innovation in Islam) that must be avoided and prohibited.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.