If I Saw Him Walking in the Air...

Al-Layth bin Sa’d (d. 175H) said: 

"If I saw a person of desires (i.e. innovations) walking upon the water I would not accept from him." 

So Imaam as-Shaafi’ee then said: 

"He (al-Layth) has fallen short. If I saw him walking in the air I would not accept from him." 

(Reported by as-Suyooti in al-Amr bil ‘Ittibaa wan-Nahee anil Ibtidaa’.)