Explanation

Imam Tirmizi (824-892 CE) was a renowned Islamic scholar and collector of hadith (Prophetic traditions).

He compiled a hadith collection known as Jami' al-Tirmizi.

It is considered one of the six most authentic hadith collections in Islam.

Imam Tirmizi's work is ranked fifth in the history of hadith collection, after:

1. Imam Bukhari (810-870 CE)
2. Imam Muslim (817-875 CE)
3. Imam Abu Dawud (817-889 CE)
4. Imam Nasa'i (823-915 CE)

So, Imam Tirmizi's collection is ranked fifth in the order of authenticity and preference.