Hawzah News Agency – If there is a total solar eclipse or a total lunar eclipse and a mukallaf intentionally (ʿamdan) does not perform the prayer of signs (ṣalāt al-āyāt) in its prescribed time, then based on obligatory precaution he must perform ghusl before he makes it up [i.e. when he performs ṣalāt al-āyāt belatedly (qaḍāʾ), he cannot do so with wuḍūʾ; rather, he must perform ghusl first and then perform the prayer with that ghusl].(1)
---------------------------------------------------------
(1)- Although many jurists know this ghusl as recommended.