Sunan Abi Dawud, 1257

Narrated Bilal: Ziyadah al-Kindi reported on the authority of Bilal that he (Bilal) came to the Messenger of Allah (ﷺ) to inform him about the dawn prayer. Aisha kept Bilal engaged in a matter which she asked him till the day was bright and it became fairly light. Bilal then stood up and called him to prayer and called him repeatedly. The Messenger of Allah (ﷺ) did not yet come out. When he came out, he led the people in prayer and he (Bilal) informed him that Aisha had kept him engaged in a matter which she asked him till it became fairly light; hence he became late in reaching him (in time). He (Bilal) said: Messenger of Allah, the dawn became fairly bright. He said: If the dawn became brighter than it is now, I would pray them (the two rak'ahs of the sunnah prayer), offer them well and in a more beautiful manner

Rapporté par Bilal رضي الله عنه : Ziyadah al-Kindi a rapporté d’après Bilal que celui-ci était venu informer le Messager d’Allah ﷺ de l’heure de la prière de l’aube. Aïcha l’a retenu pour une question qu’elle lui posait, jusqu’à ce que le jour devienne bien clair. Bilal s’est alors levé et l’a appelé à la prière à plusieurs reprises. Le Messager d’Allah ﷺ n’était pas encore sorti. Lorsqu’il est sorti, il a dirigé la prière, puis Bilal lui a expliqué qu’Aïcha l’avait retenu jusqu’à ce qu’il soit en retard. Bilal a dit : « Messager d’Allah, l’aube est bien claire. » Il a répondu : « Même si l’aube devenait plus claire qu’elle ne l’est maintenant, je prierais ces deux unités (de la sunna), je les accomplirais correctement et de la plus belle manière. »