Sa'd was a very high ranking companion and a shaheed. Prophet Muhammad took much more care during his burial than he normally would, yet he still chided someone who said that he would go straight to heaven. Lesson: If you have bad akhlaq, even the prophet cannot help you against the consequences Later, Prophet Muhammad proposed Zaynab bint Jahash marry his adopted son and ex-slave Zayd ibn Haritha. When the couple was unable to get along and got a divorce, the Prophet married Zaynab instead. This broke multiple societal taboos: 1) Making marriage between the upper class and lower class seem acceptable and 2) Showing that the rules between father/son relations do not apply to adopted sons. Lecture notes available at http://www.why-quran.org/?p=598. Subscribe at http://www.why-quran.org/subscribe to watch the lectures live and participate in the Q&A at the end of each class. Video recording of this lecture + Q&A available on YouTube at https://www.youtube.com/watch?v=-xWV9lPelWs&list=PLpkB0iwLgfTat-Pgh4W3WFmupPamiC9UT.