As you know one of Fatima’s names was Siddiqah. This word means a woman with scrupulous honesty or sincerity.
Siddiqah differs from the word Sadook, in that the first is scrupulous and precise in telling facts. Furthermore, several other meanings have been given to the word Siddiqah; among them are:
A. She who is a truth-teller.
B. She who never lies.
C. She whose deeds conform to her words.
D. She who never lied, because she is used to truthfulness.
E. A woman with scrupulous speech and beliefs, and whose deeds conform to her words.
F. She who believes in the commands of Allah and His Prophet’s, without doubting any of them.
This last opinion is supported by the following Quranic verse: ‘and those who believe in Allah and His apostles; they are the truthful…” (57: 19)
Although these various meanings have been given to “Siddiqah,” it is unanimously agreed upon that the various ve