As salamu alaykum,
I have found the following narration in a book:
Aishah (radiAllahu anha) said that the Messenger of Allah (salAllahu alayhi was sallam) did not lie down to introduce a sunnah but he lied down to rest and fight tiredness so that he could offer Fajr prayer attentively (Musannaf Abdurrazzaq 3/43)
May question is this report sahih and please can you cite the original text.
In Musannaf Abdur Razzaaq the following Hadith is mentioned: Ayesha y says that when the time of Fajr arrived Nabi r used to read two Rakaaats of Salaah, then he would lie down on his right hand side until the Mu’azzin would come to him and inform him of Salaah (he would inform him that all the Sahaabah are present and waiting for him to come and lead the Salaah).
(Musannaf Abdur Razzaaq 3/43)
However the meaning of this Hadith is that Nabi r would lie down to refresh himself from the long hours of worship during the night.
And Allah Ta’aala knows best
Hamzah Mahmood Casoojee
Attested to as correct by:
Mufti Muhammed Ashraf
01 July 2010 / 18 Rajab 1431