Be mindful during prayers, Accept mistakes humbly & repent sincerely for them

This hadith is about the importance of being mindful during prayer. It was narrated from Ibn 'Umar that the Messenger of Allah forgot to say the Taslim after two Rakah. A man who was called Dhul-Yadain noticed this and asked if he had forgotten or if prayer had been shortened. The Prophet confirmed that he had indeed forgotten but not shortened his prayer. He then went forward and performed two more Rakah before saying Salam followed by prostrations of forgetfulness as an act of repentance for his mistake. This teaches us that we should always be mindful during our prayers so as not to miss any part or make any mistakes in our recitation or actions while praying. We should also be humble enough to accept when we make mistakes and repent for them sincerely in order to seek forgiveness from Allah SWT.