Didn't Cut or Shave Hair After Sa'i

One who was performing the Tamattu' Hajj made the Sa'i then changed into his normal clothes but did not shave or cut his hair. Later, after Hajj, he asked about this and was informed that he had made a mistake. What is he now supposed to do since the time for Hajj has passed?

This man is regarded as one who has neglected an obligatory act from the obligatory acts of the Umrah and that is either shaving or cutting the hair.

According to the People of Knowledge, he is required to make a sacrifice as expiation and distribute the meat to the poor and needy in Mecca and his Hajj is not affected.

Sheikh Ibn Uthaymeen