Súbor:Flag of Jihad.svg

English: The Shahada written in white on a black background. This is the reverse of File:Flag of Taliban.svg, the Shahada written in black on a white background, the flag

used by the Taliban in the period of 1997-2001.

According to comments at FOTW, some Islamist websites began to display the black-on-white flag alongside the white-on-black one:

"I have found in several "hard Islamic" websites the symbol of a white Taliban flag crossed with its inverted colour version (probably identified as Al-Qaeda flag): black background with shahada in white. I do not know if this flag is recognised by Al-Qaeda; but it is normally flying in pro-Al-Qaeda sites." (Santiago Tazon, 17 November 2001)

According to a comment from 2003:

"This black flag with the Shahada in white on it is the RAYAH, the flag of the Jihad in Islam. Not the banner of single group claiming for Jihad but the banner of the Jihad. The flag is Black and the Shahada always remains in white. Every Muslim fighting in Jihad will hold this flag. You can find the Rayah over the shoulders of Muslim fighters in Chechnya, sometimes in the street of Palestine, in Bosnia was very used by the "Black Swans" group of the Muslim Bosnian Army." (Gontzal Royo, 8 April 2003)

Note that this is just a historical online discussion about Islamist flags, it does not qualify as a quotable reference for the purposes of Wikipedia.