Collectors of Bulugh Al Marām Hadith

{7} – As Sabba

"The seven"refers to Ahmad, Bukhari, Muslim, Abu Da’ud, An Nasa’i , At-Tirmidhi and Ibn Majah.

{6} – As Sitta

"The six" refers to Bukhari, Muslim, Abu Da’ud, An Nasa’i, At-Tirmidhi and Ibn Majah (All except Ahmad).

{5} – Al Khamsa

"The five" refers to all except Bukhari and Muslim. ie. Ahmed, Abu Da'ud, An-Nasa'i, At Tirmidhi and Ibn Majah

{4} – Al Arba'a

"The four" refers to Abu Da’ud, An-Nasa’i, At-Tirmidhi, Ibn Majah (All except first 3).

{3} - Al Thalātha

"The three" refers to Abu Da’ud, An-Nasa’i, At-Tirmidhi.

{2} – Al-Muttafaq 'alaih

"Agreed upon", refers to the acceptance and agreement by Imam Bukhari and Imam Muslim. i.e. the Sahihain (Bukhari and Muslim).