Q- I heard a Hadith that says that Allah will show himself to humanity, return, and show himself to Abu Bakr (radiyallahu’anhu) alone (all for himself). Do you have a reference for this Hadith please?
This Hadith has been recorded in several books with various chains. The authenticity of these chains is strongly debated among the Muhaddithun, with many of them classifying it a fabrication.
See: Mustadrak Hakim, vol.3 pg.78 with Talkhisul Mustadrak, Al-Hilyah of Abu Nu’aym, Tarikh Baghdad, Al-La-alil Masnu’ah, vol.1 pg.286-288, Tanzihush Shari’ah, vol.1 pg.371-372, At-Tankitu wal Ifadah, pg.40-42 Al-Asrarul Mafu’ah, pg.404 & Lisanul Mizan, no.1631 & 5354.
There are several other virtues of Sayyiduna Abu Bakr (radiyallahu’anhu) that could be quoted instead.
And Allah Ta’ala Knows best,
https://hadithanswers.com/another-virtue-for-sayyiduna-abu-bakr-radiyallahuanhu/