Shaykh Saalih al-Fawzaan (may
Allaah have mercy on him) said:
The people of the pre-Islamic
days of ignorance would debate and dispute regarding matters they had no
knowledge of. What is obligatory upon a person is that he should not debate
except with knowledge. As for what he does not know, he should remain silent concerning
it. Allah the Exalted said: “Rather, they have denied that which they encompass not in
knowledge and whose interpretation has not yet come to them.” [Yoonus: 39]
This comprises of two aspects:
The First Aspect: A person should not delve into that which he does not know nor
reject that which he does not know. Rather, he should: “Allaah knows best.” As such,
Allaah told His Prophet, Muhammad (sallallaahu alayhi wasallam): “And
say, “My Lord, increase me in knowledge.” [Taa Haa: 114] So a person
should not claim to have all the knowledge. Rather, he should limit himself and
know his own worth. Even if he has a lot of knowledge, what is unknown to him
is more. Allah the Exalted said: “But over every possessor of knowledge
is one [more] knowing.” [Yoosuf: 76] until knowledge ends with Allaah,
the All-Knowing.
The Second Aspect: He should not reject something that someone else knows. Therefore,
if someone else possesses some knowledge that is unknown to you, do not reject
the knowledge with someone else. This is because, there is no human being that
has been given all of the knowledge. That is why the scholars say this phrase
that they always repeat:
من حفظ حجة على من لم يحفظ
“Whoever memorized (some knowledge) is a proof against one who didn’t
memorize.”
Source: Sharh Masaa’il Al-Jaahiliyyah,
p. 293-294 by Shaykh Saalih al-Fawzaan, transl. by Abdus-Samee Abdus-Salaam.