(4) Prayer
كتاب الصلاة
(31c) Chapter: The sunan prayers and their virtues - Section 3
(30) باب السنن وفضائلها - الفصل الثالث
Mishkat al-Masabih 1178 
‘A’isha said that God’s Messenger never omitted to pray two rak'as after the afternoon prayer in her house. (Bukhari and Muslim.) In a version by Bukhari she said, “By Him who took him away, he did not omit them till he met God.”
وَعَنْ عَائِشَةَ قَالَتْ: مَا تَرَكَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ رَكْعَتَيْنِ بَعْدَ الْعَصْرِ عِنْدِي قطّ وَفِي رِوَايَةٍ لِلْبُخَارِيِّ قَالَتْ: وَالَّذِي ذَهَبَ بِهِ مَا تَركهمَا حَتَّى لَقِي الله
 مُتَّفق عَلَيْهِ  (الألباني)حكم :
Reference : Mishkat al-Masabih 1178
In-book reference : Book 4, Hadith 595