Riyad as-Salihin (The Meadows of the Righteous)
by Imam Nawawi
146. Chapter: On the recommendation to ask the family of a sick person about how he is
910. Ibn 'Abbas reported that 'Ali ibn Abi Talib left the Messenger of Allah, may Allah bless him and grant him peace, in his final illness and people said, "O Abu'l-Hasan! How is the Messenger of Allah this morning?" He said, "Praise be to Allah, he is better this morning." [al-Bukhari]
