Mainmoon ibn Maihraan reported that a man approached agroup of people who were gathered together. Saying nothing to anyone else, the man turned to one particular attendee of the gathering – Abu Bakr RA – and said, ‘Peace be upon you (asalamu ‘alaykum), O Khaleefah of the Messenger of Allah.’

Reproaching the man for singling him out and for not extending greeting of peace to anyone else, Abu Bakr RA said, ‘Me only? And what about everyone else who is here?’

[Al Jaamai’ Li-Akhlaaq Ar-Raawee Wa-Aadaab As-Saamai’, by Al Khateeb (1/172), 255.]