Salam ‘alaykum Shaykh Gibril
I am looking for the hadith where Sayyidina Abu Bakr as-Siddiq (r) donated all his wealth and Sayyidina ‘Umar (r) half and the Prophet (s) said to Sayyidina ‘Umar (r) your iman is half that of Abu Bakr.
Here you go, from my book “Abu Bakr al-Siddiq (radya Allah `anh)“:
When the Prophet (s) ordered the Companions to pay charity, ‘Umar said, “This order was given at a time when I had property, so I said, ‘Today I shall surpass Abu Bakr if I am ever to surpass him!’ Then I brought half of my property. The Prophet (s) said, ‘What did you leave for your family?’ He replied, ‘I left for them Allah and His Prophet.’ When I saw this I said, ‘By Allah I shall never surpass him in anything.'”
Narrated from Aslam al-`Adawi by Tirmidhi (hasan sahih), Abu Dawud, al-Darimi, al-Bazzar (1:263, 1:394), al-Hakim (1990 ed. 1:574 sahih `ala shari Muslim), al-Bayhaqi in the Sunan (4:190), al-Dya al-Maqdisi in al-Mukhtara (1:174), and other.
Hajj Gibril Haddad