In brief, is it permissible to recite Dua Kumayl weekly? And is it permissible to recite it for its eloquent words and meanings, even if it is not authentic? And is it valid to supplicate with it after the final tashahhud and suffice with it before the salutation?

Kamil's Supplication is one of the popular supplications among the Shia, recited on Friday nights and on the night of mid-Sha'ban. They claim it has great merit and a profound effect on nurturing the soul, but it is a fabricated supplication with no basis among the Sunnis. It should not be recited or adhered to persistently, as it has become a شعار (emblem) for the people of innovation.

If the questioner asks about limiting oneself to this supplication after the Abrahamic prayer (Salat al-Ibrahimiyyah), the answer is that this is not permissible; rather, it is forbidden. As for saying the salutation (taslim) immediately after completing the Abrahamic prayer without any supplication, that is permissible, because supplication in the last tashahhud is sunnah (recommended) and not obligatory. However, it is recommended to seek refuge in Allah from four things before the salutation.