He said, "The Prophet ﷺ arrived, and there was no one among his companions with graying hair except Abu Bakr, so he dyed it with henna and katam."
قال: قدم النبي ﷺ وليس في أصحابه أشمط غير أبي بكر فخلفها بالحناء والكتم.
Narrated by Bukhari in "Virtues of the Ansar" (3919) from Sulayman bin Abdul-Rahman, who said, Muhammad bin Himyar told us, Ibrahim bin Abu Abla told us, that Uqba bin Wassaj told him, from Anas, who said, and he mentioned it. Bukhari then said, Duhaym said, Walid told us, Uzai told us, Abu Ubayd told me, from Uqba bin Wassaj, Anas bin Malik told me, saying, "The Prophet came to Madinah, and the oldest of his companions was Abu Bakr, so he dyed it with henna and katam until its color became a deep red." This suspended chain was connected by Ibn Abu Asim in Al-Ahad wal-Mathani (53) in abbreviated form.His saying "ashmat" refers to whiteness of the hair of the head or beard mixed with black. His saying "ghallafaha" means he dyed it. His saying "qana lawnuha" means its redness intensified until it approached black.Among the reports about Abu Bakr Siddiq is what Bukhari narrated in "Virtues of the Ansar" (3842), saying, Ismail told us, my brother told me, from Sulayman bin Bilal, from Yahya bin Saeed, from Abdul-Rahman bin Qasim, from Qasim bin Muhammad, from Ayesha, who said, "Abu Bakr had a servant who used to bring him his earnings, and Abu Bakr used to eat from his earnings. One day the servant brought something, and Abu Bakr ate from it. The servant said to him, 'Do you know what this is?' Abu Bakr said, 'What is it?' He said, 'I practiced divination for a person during the Age of Ignorance, and I do not know divination well, but I deceived him. Then he met me and gave me this for it, and this is what you ate from.' So Abu Bakr put his hand into his mouth and vomited up everything in his stomach."Among his reports also is what Bukhari narrated in "Virtues of the Ansar" (3921), saying, Asbagh told us, Ibn Wahb told us, from Yunus, from Ibn Shihab, from Urwa bin Zubayr, from Ayesha, that Abu Bakr
married a woman from Kalb called Umm Bakr. When Abu Bakr emigrated, he divorced her, and she was then married by her cousin, this poet who composed this elegiac poem lamenting the disbelievers of Quraysh,"What is at the well, the well of Badr,
made of shizah wood adorned with a hump,
What is at the well, the well of Badr,
of singing girls and noble drinking companions,
Convey greetings to Umm Bakr,
and is there for me, after my people, any peace,
The Messenger tells us that we shall live again,
but how can there be life for skulls and bones."Among his reports
is also his fighting against the people of apostasy.