Narrated Tariq bin Shihab (raa): A Jew said to ‘Umar (raa), “O Chief of the Believers, if this verse:”
Al-Mâ’idah – Surah 5. The Table Spread
[5:3] “This day I have perfected your religion for you, completed My favors upon you, and have chosen for you, Islam as your religion.”
“had been revealed upon us, we would have taken that day as an ‘Id (festival) day.”
‘Umar (raa) said, “I know definitely on what day this Verse was revealed; it was revealed on the day of ‘Arafat, on a Friday.”
Holding Fast to the Qur’an and Sunnah – Sahih Bukhari: Volume 9, Book 92, Number 373

Sabr (Patience) & Dhikr (Remembrance of Allah) During Illness
Narrated ‘Ata bin Abi Rabah (raa): Ibn ‘Abbas (raa) said to me, “Shall I show you a woman of the people of Paradise?”
I said, “Yes.”
He said, This black lady (raa) came to the Prophet (saws) and said, “I get attacks of epilepsy and my body becomes uncovered; please invoke Allah for me.”
The Prophet said (to her), “If you wish, be patient and you will have (enter) Paradise; and if you wish, I will invoke Allah to cure you.”
She said, “I will remain patient,” and added, “but I become uncovered, so please invoke Allah for me that I may not become uncovered.”
So he invoked Allah for her.
Patients – Sahih Bukhari: Volume 7, Book 70, Number 555
Commentary: Patience
Riyadh as-Saaliheen (The Gardens of the Righteous), by Imam an-Nawawi