It is recommended for one who misses it, or part of it, to make it up in its prescribed manner.
His statement, “It is recommended for one who misses it, or part of it, to make it up in its prescribed manner”: According to the jurists, a sunnah is that for which one who performs it is rewarded, while one who leaves it is not punished. Thus, whoever misses the Festival prayer is recommended to make it up. This does not conflict with our saying that the Festival prayer is a communal obligation, because the obligation has been discharged by the initial prayer.
[His statement, “or part of it,” is in the nominative case, coordinated with the implicit pronoun in “misses it.”
His statement, “to make it up,” is the passive subject of “is recommended.”]
His statement, “in its prescribed manner,” means in the manner of the prayer: two units of prayer with the additional takbīrs.
This is the established position of the school: making it up is recommended, and it is preferable that it be made up in its prescribed manner.
Accordingly, if one does not make it up, he incurs no sin.
If he makes it up as an ordinary voluntary prayer, this is permissible, because performing it in its prescribed manner is preferable rather than obligatory.
The evidence for the recommended nature of making it up is the Prophet’s saying, may Allah’s blessings and peace be upon him: “Whoever sleeps through a prayer or forgets it, let him pray it when he remembers it” (1); and the Messenger’s saying, may Allah’s blessings and peace be upon him: “Pray what you catch, and complete what you miss” (2).
However, there is room for consideration in adducing these two hadiths as evidence, because what is meant by them is the obligatory prayer. This, however, is a prayer legislated to be performed in a particular congregational manner. Therefore, if it is missed, it should not be made up unless there is evidence establishing that it is to be made up when missed. This is why, if a person misses the Friday prayer, he does not make it up; rather, he performs the obligatory prayer of that time, which is the noon prayer.