How long should one sit after the first two rak‘ahs?

Hazrat Abu Ubaidah narrates that my father, Hazrat Abdullah bin Masood, says that the Holy Prophet (peace and blessings be upon him) used to sit for such a short while after the first two rak'ahs as if sitting on a hot stone. I asked him, "Before standing up?" He replied, "Yes, before standing up."

Hazrat Tamim bin Salamah says that Hazrat Abu Bakr used to sit for as long after two rak'ahs as if he were sitting on a hot stone.

A Tabi'i narrates that he prayed behind Hazrat Abu Bakr, and after the first two rak'ahs, before standing up, he sat for as long as one would sit on burning coals.

Hazrat Mughira narrates that after Ibrahim would perform two rak'ahs, he would sit for the duration of reciting a brief tashahhud and then stand up.

Hazrat Ibn Umar (may Allah be pleased with both of them) used to say that in two rak‘ahs, the only pause for comfort is kept for Tashahhud.

Hasan used to say that nothing should be added to the Tashahhud after the first two rak‘ahs.

Hazrat Sha’bi says that whoever adds anything to the Tashahhud in the first Qa’dah, it is obligatory upon him to perform Sajdah Sahw.

Hazrat Aisha (may Allah be pleased with her) narrates that the Noble Prophet (peace and blessings be upon him) used to recite the Tashahhud after two rak‘ahs.