Sayyiduna Abu Sa‘id bin Ma‘la (may Allah be pleased with him) narrates that the Messenger of Allah (peace and blessings of Allah be upon him) passed by me while I was praying, so he (peace be upon him) called me. He narrated the hadith similar to the one mentioned above, but in this narration, instead of "the most virtuous surah," the words "the greatest surah" are used.
Hadith Referenceصحيح ابن خزيمه / جماع أبواب الكلام المباح فى الصلاة والدعاء والذكر، ومسألة الرب عز وجل وما يضاهي هذا ويقاربه / 863