Accuracy and precision

Reference: Siyar A’laam an-Nubalaa – Volume 9, Page 98

Yahya ibn Ma’een said:

That day, Ghundar brought out a sack of books, and said: ‘Do your best to find an error in them.’

So we [strived hard, and] did not find an error in any of them.

And [as for Ghundar], he [was a man who] would fast every other day for the past 50 years.

He is a graduate of the Islaamic University of Madeenah, having graduated from the Institute of Arabic Language, and later the Faculty of Sharee'ah in 2004. He currently resides in Birmingham, UK.