Hadith 505690
Chapter 16: Burials - كتاب الجنائز
وَحَدَّثَنِي عَنْ مَالِكٍ، أَنَّهُ بَلَغَهُ أَنَّ عَائِشَةَ، قَالَتْ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " مَا مِنْ نَبِيٍّ يَمُوتُ حَتَّى يُخَيَّرَ " . قَالَتْ فَسَمِعْتُهُ يَقُولُ " اللَّهُمَّ الرَّفِيقَ الأَعْلَى " . فَعَرَفْتُ أَنَّهُ ذَاهِبٌ .
Yahya related to me from Malik that he heard that A'isha said, "The Messenger of Allah, may Allah bless him and grant him peace, said, 'No prophet dies until he is given the choice.' " She continued, "I heard him say ,'O Allah, the highest company,' and I knew that he was going."
Reference Muwatta Malik 505690
USC-MSA web (English) reference : Book 16, Hadith 47