Sayyiduna ‘Umar Farooq-e-A’zam رَضِىَ الـلّٰـهُ تَـعَـالٰی عَـنْـهُ offered Salah although he رَضِىَ اللهُ تَعَالٰی عَـنْهُ was seriously injured.

(Kitab-ul-Kaba`ir, pp. 22)

The body remained intact in the grave

It is stated in the book Sahih Bukhari: Sayyiduna ‘Urwah Bin Zubayr رَضِىَ اللهُ تَعَالٰی عَـنْهُ reported that when the wall of the Blessed Mausoleum [of the Holy Prophet صَلَّى اللهُ تَعَالٰى عَلَيْهِ وَاٰلِهٖ وَسَلَّم] fell down during the reign of caliph Waleed Bin ‘Abdul Malik, people attempted to rebuild the wall. (Whilst digging in for the foundation), a foot became visible. Bewildered and surprise, people thought that it was the blessed foot of the Noblest Prophet صَلَّى اللهُ تَعَالٰى عَلَيْهِ وَاٰلِهٖ وَسَلَّم. When nobody could verify it, then Sayyiduna ‘Urwah Bin Zubayr رَضِىَ اللهُ تَعَالٰی عَـنْهُ said:

لَا وَاللّٰهِ! مَا هِىَ قَدَمُ النَّبِىِّ صَلَّی اللّٰہ تعالٰی علیہ واٰلہ وسلَّم ، مَا هِىَ اِلَّا قَدَمُ عُمَرَ رَضِىَ اللّٰهُ تَعَالٰي عَنۡهُ

i.e. By Allah (عَزَّوَجَلَّ)! This is not the blessed foot of the Noblest Prophet صَلَّى اللهُ تَعَالٰى عَلَيْهِ وَاٰلِهٖ وَسَلَّم, rather it is that of Sayyiduna ‘Umar رَضِىَ اللهُ تَعَالٰی عَـنْهُ. (Sahih Bukhari, vol. 1, pp. 469, Hadees 1390)

Jabeen mayli nahin hoti dahan mayla nahin hota

Ghulaman-e-Muhammad ka kafan mayla nahin hota

صَلُّوۡا عَلَى الۡحَبِيۡب           صَلَّى اللّٰهُ تَعَالٰى عَلٰى مُحَمَّد