Naming those who have not seen only one man

Abu Muhammad al -Hasan bin Rashiq told us, he said: Abu Abd al -Rahman al -Nasa''i, may God have mercy on him, told us the name of those who did not see him except for one man. About him other than the partner of Khalid bin Al -Fazar, we do not know anyone who narrated from him other than Al -Hassan bin Saleh.