Sayyiduna Abdullah bin Salam (may Allah be pleased with him) said: While the Messenger of Allah (peace and blessings be upon him) was sitting, I said: "We find in the Book of Allah that on Friday there is an hour such that no believing servant coincides with it while praying and asks Allah for something, except that Allah fulfils his need." Abdullah (may Allah be pleased with him) said: The Messenger of Allah (peace and blessings be upon him) pointed towards me, saying: "Part of an hour." I said: "You have spoken the truth, part of an hour." I asked: "Which hour is it?" He (peace and blessings be upon him) said: "The last hours of the day." I said: "But that is not an hour of prayer." He (peace and blessings be upon him) said: "Indeed it is. When the believing servant prays, then sits and nothing holds him back except the prayer, he is counted as being in prayer."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 14002
Sayyiduna Abdullah bin Salam (may Allah be pleased with him) said: I was sitting with some of the Companions of the Prophet (peace and blessings be upon him), and they said: "Who among you will go to the Prophet (peace and blessings be upon him) and ask him which deed is most beloved to Allah?" Thereupon this verse was revealed: "O you who believe, why do you say what you do not do?" [Surah al-Saff: 2]. The narrator said: Then each narrator, having heard this (surah) from the narrator before him, recited it to us in the same way from beginning to end, and each one wept while reciting it.
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 14003
Sayyiduna Abdullah bin Salam (may Allah be pleased with him) said: We were discussing among ourselves, and we said: "Who among us will go to the Messenger of Allah (peace and blessings be upon him) and ask him which deed is most beloved to Allah?" But we were too awed for any of us to get up (and go himself). Then the Messenger of Allah (peace and blessings be upon him) himself sent a man to us; we began pointing to one another. Then he recited to us from beginning to end: "Whatever is in the heavens and whatever is on the earth glorifies Allah." (And in the same way, each narrator, having heard it from the narrator before him, recited it from beginning to end to those after him.)
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 14004