He heard him say that the Prophet ﷺ came to them at the shelter of the Muhajirun. A man asked him, "Which verse in the Quran is the greatest?"The Prophet ﷺ replied, "Allah, there is no god but He, the Living, the Self-Sustaining. Neither slumber nor sleep overtakes Him" [Baqarah 2:255].
أنه سمعه يقول: إن النبي ﷺ جاءهم في صفة المهاجرين، فسأله إنسان: أي آية في القرآن أعظم؟ قال النبي ﷺ: {الله لا إله إلا هو الحي القيوم لا تأخذه سنة ولا نوم}
Abu Dawud (4003) narrated it from Muhammad bin Isa, who said, Hajjaj narrated to us from Ibn Jurayj, Umar bin Ataa told me that a freedman of Ibn Asqa, a truthful man, told him on the authority of Ibn Asqa, and he mentioned it. Ibn Asqa is Wathila, and his freedman was not named, but he was described as a truthful man.