What will be the first thing to speak from a human being on the Day of Resurrection?

The Day of Judgment has many facets. There are situations where people will speak, and others where their mouths will be sealed. The first part of a human that speaks is their tongue. If they deny and disavow, their mouth will be sealed, and their limbs will speak, testifying to their deeds. Then, the tongues will speak, bearing witness against themselves. The proof for this is that a servant will say: "O Lord, did You not protect me from injustice?" Allah will answer: "Indeed." The servant will then say: "I will not accept any witness against myself except from myself." Allah will say: "Sufficient is yourself today as a witness against you, and the noble scribes as witnesses." Then, his mouth will be sealed, and his limbs will speak.