To what extent is the following Hadith authentic: "My brother Abu Bakr and I were like two competing racehorses; I outran him, and he followed me, but had he outrun me, I would have followed him"?

This Hadith (definition) is one of those widespread among people, and scholars have deemed it among the fabricated ones. In Al-Ajlouni's book, "Kashf al-Khafa' wa Muzil al-Ilbas," it is mentioned that "the chapter on the virtues of Abu Bakr al-Siddiq, may Allah be pleased with him, is among the most famous of fabricated topics," and this Hadith is one of them. Likewise, Ibn al-Qayyim said in "Al-Manar al-Munif" that this Hadith is among those fabricated by the ignorant individuals attributed to Sunnah (definition) concerning the virtues of al-Siddiq.