Nuaim bin Hammad's book Kitab Al-Fitan) is it reliable? who is Nuaim bin Hammad????

Nuaim bin Hammad's book Kitab Al-Fitan) is it reliable? who is Nuaim bin Hammad????
إملاء الخير خير من السكوت والسكوت خير من إملاء الشر
"Speaking what is good is better than silence, and silence is better than speaking evil."
the link above is dead. Someone said that this :
“When the belly of Makkah will be cleft open and through it will be dug out river-like passages (i.e. tunnels) and the buildings of the Holy City of Makkah will rise higher than its mountains, when you observe these signs, then understand that the time of trial is near at hand.”
is recorded in the Kitab al fitnah by ibn hammad.
1. Is it in this book?
2. Is it authentic?
O Aqsa
“Jihad will continue from the day I was sent by Allah till the last people of my nation fight against the Dajjal, it will neither be stopped by oppression nor abstention”
إملاء الخير خير من السكوت والسكوت خير من إملاء الشر
"Speaking what is good is better than silence, and silence is better than speaking evil."
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