Is it permissible to repeat the words of a song after repentance, knowing that another person is allowed to repeat the same words if they memorized them from an anasheed (Islamic vocal music) that has no musical instruments?

Repeating song lyrics that do not contain any objectionable material, without music, is permissible, provided that one is not distracted from what is obligatory upon them. There is no known basis for its prohibition, and the insincerity of repentance is known by returning to the sin.