Is it permissible to perform the Fajr prayer as making up for someone who works in the morning and cannot sleep after the prayer?

"Prayer holds a great status in Islam, and it is the second pillar thereof and the first of the servant's deeds for which he will be held accountable. Preserving it is a cause for success and salvation, and neglecting it is a cause for disappointment and loss. A severe warning has been established regarding the one who abandons it or is negligent of it, and from preserving it is performing it on time. The obligatory duty upon the one who asked about his situation is to perform the prayers on time, including the Fajr (dawn) prayer, and it is not permissible to delay it beyond its time under the pretext of being unable to sleep afterward; because deliberately delaying the prayer until its time expires without a legitimate excuse is a major sin from among the major sins, and it was said: it is a disbelieving act that takes one out of the fold of Islam.

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