There is no concept of Qada (Missed) Prayers (Salats) in the Quran. This concept is from the man made Hadiths.
The Quran says:
Allah asserts in the Quran that the prescribed Salat must be observed at specific times only:
“………. the Salat are decreed for the believers at specific times” 4:103
Hadith attributed to the Prophet:
In spite of this clear law of Allah, we read numerous hadith that makes it permissible for believers to observe the Salat after it’s prescribed time has passed. This they call Salat Qada. As a result of this un-Quranic concession, the devil has tricked millions into ignoring 4:103 altogether and unlawfully observe all their missed prayers collectively at night when they would not be leaving any work or leisure to commemorate Allah!
By doing so they miss the prime issue related to observing Salat at specific times, the reader is invited to read the following Quranic words:
“People who are not distracted by business or trade from commemorating Allah; they observe the Salat, and give the obligatory charity (Zakat), and they are conscious of the day when the minds and the eyes will be horrified” 24:37
These words outline clearly why we must observe the Salat at specific times and not let any business, trade, or leisure distract us from doing so. Obviously if we were to ignore the specific times set by Allah when we are busy at our work or leisure then we would have totally ignored the command in 24:37
Nevertheless, there will always be a corrupt hadith that will totally violate a specific Quranic command, and with regards to the command in 4:103, we find a number of fabricated hadith that falsely say that the Prophet observed prayers outside their prescribed times.
Bukhari, Volume 2, Book 20, Number 212:
Narrated Anas bin Malik:
“Whenever the Prophet started a journey before noon, he used to delay the Zuhr prayer till the time of ‘Asr and then offer them together; and if the sun declined (at noon) he used to offer the Zuhr prayer and then ride (for the journey)”
Bukhari, Volume 2, Book 26, Number 733:
Narrated Ibn ‘Umar:
“The Prophet offered the Maghrib and ‘Isha’ prayers together at Jam’ (i.e. Al-Muzdalifa) with a separate Iqama for each of them and did not offer any optional prayer in between them or after each of them”
Bukhari, Volume 2, Book 26, Number 734:
Narrated Abu Aiyub Al-Ansari:
“Allah’s Apostle offered the Maghrib and ‘Isha’ prayers together at Al-Muzdalifa”
Bukhari, Volume 2, Book 26, Number 742:
“I never saw the Prophet offering any prayer not at its stated time except two; he prayed the Maghrib and the ‘Isha’ together and he offered the morning prayer before its usual time”
Is it possible that the Prophet changed the law of Allah in 4:103 and observed prayers outside their times?