Mudabbaj[1] is the narration of each peer from the other.[2] Al-‘Irāqī and Dar al-Quṭnī did not stipulate that the two narrators needed to be qarīn.[3]
[1] Literally; embellished.
[2] For example the narrations of ‘Ā`isha from Abū Hurayrah and vice versa. Likewise the narrations of Mālik from al-Awzā`ī and vice versa. Similarly the narrations of Aḥmad ibn Ḥanbal from `Alī bin al-Madīnī and vice versa.
[3] Where they studied from one teacher. This is illustrated in the following example where Imām Bukhāri narrates from Imām Tirmidhī. According to al-‘Irāqī and Dar al-Quṭnī this is mudabbaj, whereas according to Ibn Ḥājar and others this is not mudabbaj as Imām Bukhāri is not a qarīn of Imām Tirmidhī, rather is his teacher.
