These are the four fundamental requirements of "rawy el hadith":These are the four fundamental requirements of "rawy el hadith":
Puberty, a narration is never accepted from a child who has not reached puberty.
Good memory and he must be able to differentiate between right and wrong.
He must be "saleh" (good man and knows his religion well) and not "fasek".
As you have mentioned already "be trustworthy and not have lied before".
As for blind men and slaves: their testimony in hadith was forbidden by Imam Shafe'y but allowed by Imam Malek. But reports are accepted from them.
As for women reports are not accepted from them, however there are 2 exceptions and they are A'esha and Om SalamaOme-Salama