Ibn 'Abbas (RAA) narrated, 'An elderly man is permitted to break his fast, but he must feed a poor person daily, and he does not have to make up for it.' Related by Ad-Daraqutni and Al- hakim, who rendered it to be Sahih (IT)
English reference (IT): Book 5, Hadith 696 (IT)
Arabic reference (IT): Book 5, Hadith 675 (IT)