It is narrated from Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) that he said: "Indeed, ties of kinship are cut and blessings are met with ingratitude, but when Allah Almighty creates affection between hearts, nothing can then separate them." Then he recited this verse: "Had you spent all that is in the earth, you could not have brought their hearts together" [Surah al-Anfal: 63] . This hadith is sahih (authentic) on the condition of the two Shaykhs (Bukhari and Muslim), and they did not record it.