1) The most important works from the fourth stage of hadith collection are:

1. Musnad of Imam Ahmad and Sahih al-Bukhari.
2. Muwatta of Imam Malik and Sahih al-Jami’.
3. Musnad of Imam Ahmad and Muwatta of Imam Malik.
4. Muwatta of Imam Malik and Sahih al-Bukhari.

2) ‘Discovery of books or hadith was not recognized by Muslim scholars as a reliable method of preserving hadith.’

1. It is imperative to know the honesty and competence of the person who transmits hadith before it can be accepted. It is not possible to know this about the writers of unknown books of hadith, therefore, they cannot be accepted, no matter how old.
2. This is a false statement.
3. It was considered an authentic source until the second century of Hijrah.
4. Finding some books is recognized as a valid source of authentic narrations.

3) The third stage of hadith collection is characterized by:

1. traveling in search of hadith.
2. official efforts to preserve hadith.
3. issuance of definite orders by the Umayyad Caliph, that written collections of hadith should be made.
4. All of the above.

4) The most important work of hadith in the third stage of collection is:

1. Sahih Bukhari.
2. Sahih Muslim.
3. Muwatta of Imam Malik.
4. Musnad of Imam Ahmad.

5) The most important method of preserving hadith were:

1. teacher reading hadith correctly to a student, or student reading hadith correctly to the teacher.
2. inherited books.
3. finding buried manuscripts.
4. none of the above.