Concept: Identifying the statement that is historically inaccurate among the given options.Explanation: The farewell sermon (Hajjatu-l-Wada) was indeed delivered in 633 C.E. Ja'far ibn Abi Talib did take part in the Hijrah to Abyssinia. Tafsir is correctly defined as the commentary/exegesis of the Qur'an. However, revenge for murder was not a prescribed or lawful practice in Jahiliyyah. It was an existing social custom, but it was not prescribed as a legal rule. Therefore, option C is the false statement.Answer: C. Revenge for murders was prescribed in Jahiliyyah is the incorrect statement.