The Difference Between the First and the Last Tashahhud

Question:
The issue of the shaytan in the hadith of Aisha (may Allah be pleased with her) is that she saw him, and he used to say in every two rak'ahs, "the greeting." Why was this not used as evidence for the ruling of the first tashahhud, just as it was used as evidence for the ruling of the preceding actions, such as when he saw that the wudu was not complete, he did not prostrate until he was overcome, or what?

Answer:
The first tashahhud is not like the last tashahhud. The evidence is that when the Prophet (peace and blessings be upon him) stood up and forgot the first tashahhud, he did not return to it. If it had been a pillar, he would have returned to it. This indicates that it is not a pillar. This is the aspect in which it differs from the last tashahhud, because when the Messenger (peace and blessings be upon him) stood up and forgot the first tashahhud, he did not return to it; rather, he prostrated the two prostrations of forgetfulness.