Is the one who recites the Ibrahimiyyah prayer in the first tashahhud sinful?

Question:
May Allah reward you. You say: If one recites the Ibrahimiyyah prayer in a four-rak'ah prayer or in the first two rak'ahs of Maghrib, after the first tashahhud, whether out of forgetfulness or intentionally, is there sin in that?

Answer:
There is no sin in that. In fact, some scholars hold that one should send blessings upon the Prophet (peace and blessings be upon him) after the first tashahhud. So the Muslim is not sinful if he does that, especially if he did it out of forgetfulness.