Al Ajhuri's explanatory notes on the Nukbat al-Fikr, a hadith science primer. 664 page excellent quality print from Dar Amir Kirkuk and Dar ibn Hazm Beirut. Abu al-Hassan Nur al-Din al-Ajhuri was born in Egypt in 967 AH, was an Iman and was an expert on Islamic law as well as the sciences of the Arabic language. He died in 1066 AH. His work is clear and well-resourced, with tracks and clear explanation in his commentary.