However, if one only performs Qunoot in the fifth and tenth rak'ahs, it is still permissible as there is a narration supporting this practice. If a person finishes the Salat al-Kusuf (prayer during an eclipse) and the eclipse has not yet ended, they should repeat the prayer. Alternatively, if they wish, they may sit and glorify Allah سبحانه وتعالى the Almighty until the eclipse clears. It is not permissible to perform Salat al-Kusuf during the time of a prescribed (obligatory) prayer until the obligatory prayer is completed. If one is engaged in Salat al-Kusuf and the time for an obligatory prayer begins, they should interrupt the eclipse prayer, perform the obligatory prayer, and then continue from where they left off in Salat al-Kusuf.
Commentary #5