Ikrimah narrates from Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) the story of Aws's zihar, up to: "then the freeing of a neck (slave)" [Surah al-Mujadilah: 3]. Khuwaylah (may Allah be pleased with her) said: "He has no one to serve him except me; we have no slave." He (peace and blessings be upon him) said: "And whoever does not find (a slave), then fasting for two consecutive months" [Surah al-Mujadilah: 4]. Khuwaylah (may Allah be pleased with her) said: By Allah, if he did not eat and drink three times a day, his sight would go. He (peace and blessings be upon him) said: "And whoever is not able, then feeding sixty poor people" [Surah al-Mujadilah: 4]. Khuwaylah (may Allah be pleased with her) said: "Where would one like him get so much food?" So the Prophet (peace and blessings be upon him) called for half a wasq, and a wasq is sixty sa'. He (peace and blessings be upon him) said: "Let him feed sixty poor people and take you back."
(b) Al-Hakam bin Aban narrates from Ikrimah without mentioning Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both); at its end it says that he (peace and blessings be upon him) said: "Let him feed sixty poor people." He said: "I do not have (the means)." The narrator says: Dates were brought to the Prophet (peace and blessings be upon him), probably 15 sa' or 20 sa', and he (peace and blessings be upon him) said: "Take this and distribute it." The man said: "Between these two edges of the mountain there is no one more needy than me." He (peace and blessings be upon him) said: "Eat it yourself and feed your family."
Abu Hamzah al-Thumali narrated it thus, and he is da'if (weak).
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الظهار / 15287