Muhammad ibn Al-Hasan said: “It is possible that the question was regarding one who experiences a hadath after the two testimonies, even if he did not complete the rest of his tashahhud, and for that reason he said: His prayer is complete. And if it had been before that, it would have been obligatory upon him to repeat the prayer, as we have explained. As for his statement: "And indeed the tashahhud is a sunnah," its meaning is what is beyond the two testimonies, as we have explained previously, and what he commanded him to do, to repeat it after performing ablution, is to be understood as recommended.” As for what he narrated:
Commentary #29