Lengthening the final prostration beyond the other pillars of the prayer for supplication and seeking forgiveness: Is there a defect in the prayer if the final prostration is lengthened?

The questioner : The listener Abdullah says: Lengthening the final prostration beyond the other pillars of the prayer for supplication and seeking forgiveness, is there a defect in the prayer if the final prostration is lengthened?

The Shaykh : Lengthening the final prostration is not in accordance with the Sunnah, because the Sunnah is for the actions of the prayer to be roughly equal in duration: the bowing and rising from it, the prostration, and the sitting between the two prostrations, as al-Bara' ibn 'Azib (may Allah be pleased with him) said: This is what is best.
However, there is a place for supplication other than prostration, which is the tashahhud. When the Prophet (peace and blessings be upon him) taught 'Abdullah ibn Mas'ud the tashahhud, he said: So let him make his supplication, whether little or much, after the final tashahhud before he says the closing salam.