Why do most imams remain silent after reciting al-Fatihah, given that it is not established from the Prophet (peace and blessings be upon him) that he had a pause after al-Fatihah?

Question:
Honorable Shaykh, may Allah grant you success. He says: If it is not established from the Prophet (peace and blessings be upon him) after al-Fatihah, and before reciting the surah that follows, what is the ruling on what most imams do, who remain silent after reciting al-Fatihah?

Answer:
They say this is a matter of juristic preference (istihsan), so that the ma'mum (one praying behind the imam) can recite al-Fatihah and be able to complete its recitation, or it is a matter of juristic preference, even if there is no evidence for it or no sound evidence for it.