Can someone recite the talbiyah without donning ihram?

It is narrated from Hazrat Ibn Abbas (may Allah be pleased with them both) that Hazrat Duba’ah bint Zubair bin Abdul Muttalib came to the service of the Noble Prophet (peace and blessings be upon him) and said, “O Messenger of Allah (peace and blessings be upon him)! I intend to perform Hajj, so should I set a condition for it?” The Prophet (peace and blessings be upon him) said, “Yes, set a condition.” She asked, “What should I say?” The Prophet (peace and blessings be upon him) said, “Say: Labbayk Allahumma Labbayk, and enter into Ihram from the place where you are prevented.”

Hazrat Ata used to recite the Talbiyah without wearing the Ihram.

It was asked from Hazrat Hakam that a person is not in the state of Ihram and he teaches Talbiyah to someone else. He replied that there is no harm in it.

Ibrahim says that there is no harm.

Hazrat Mujahid says that our elders used to teach us this.

Hasan and Hazrat Ata did not consider there to be any harm in this.