Sufyan bin ‘Abdullah Thaqafi said:
“I said: ‘O Messenger of
Allah,
tell me of something that I can adhere to.’ He said: ‘Say:
“Allah is
my Lord,” then stand straight (adhere steadfastly to
Islam).’ He said:
‘O Messenger of Allah, what is the thing that
you fear most for me?’
The Messenger of Allah (ﷺ) took hold of
his own tongue, then he
said: ‘This.’”