(57) باب ذِكْرِ الاِخْتِلاَفِ عَلَى إِبْرَاهِيمَ فِي النَّبِيذِ
'Ubaidullah bin Sa'eed said:
"I heard Abu Usamah say: 'I never saw any man more assiduous in seeking knowledge than 'Abdullah bin Al-Mubarak, not in Ash-Sham, Egypt, Yemen or the Hijaz.'"
Reference: Sunan an-Nasa'i 5752
In-book reference: Book 51, Hadith 214
English translation: Vol. 6, Book 51, Hadith 5755