Who is meant by the reference 'Related by the Three or Five Compilers'?

Q 4: What is meant by "Related by the three" and "Related by the five"?

A: The Three Compilers are Abu Dawud, Al-Tirmidhy, and Al-Nasa'y, whereas the Five Compliers refers to the three Imams mentioned previously along with Ibn Majah and Imam Ahmad. (Part No. 3; Page No. 191) May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.