I do not know

Reference: Jaami’u Bayaan al-‘Ilm – Volume 2, Page 841

‘Uqbah ibn Muslim said:

I accompanied Ibn ‘Umar (radhi-yAllaahu ‘anhumaa) for 34 months, and [during this time] whenever he was asked a question, he would respond with: I do not know. He then turned to me and said: Do you know what these [people] wanted, they wanted to use our backs as a bridge for themselves to Hell.

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.