Sahih al-Bukhari 4436
Book 64: Military Expeditions led by the Prophet (pbuh) (Al-Maghaazi) · Narrated by `Aisha
Arabic
حَدَّثَنَا مُسْلِمٌ، حَدَّثَنَا شُعْبَةُ، عَنْ سَعْدٍ، عَنْ عُرْوَةَ، عَنْ عَائِشَةَ، قَالَتْ لَمَّا مَرِضَ النَّبِيُّ صلى الله عليه وسلم الْمَرَضَ الَّذِي مَاتَ فِيهِ جَعَلَ يَقُولُ " فِي الرَّفِيقِ الأَعْلَى ".
English translation
Narrated `Aisha:When the Prophet (ﷺ) fell ill in his fatal illness, he started saying, "With the highest companion
Reference: Sahih al-Bukhari 4436, Book of Military Expeditions led by the Prophet (pbuh) (Al-Maghaazi). English translation by Dr. Muhammad Muhsin Khan.