The Prophet Muhammad (pbuh) said: “Any Muslim for whom four testify that he was righteous, then Allah will enter him into Paradise.”
We said `What about three? “. He (pbuh) said “And three”. We said`And two`. He (pbuh) said: ” And two”. We did not ask him about (the testimony) of one (believing) person. (Sahih Bukhari, Jami`a Tirmidhi and An-Nasài).