Jami` at-Tirmidhi Book 47, Hadith 398
the Prophet of Allah said: “While I was at the House, between sleeping and being awake, I heard someone saying: “The one in the middle of the three.’ I was brought a vessel of gold containing Zamzam water, so my chest was split, to here.’” – Qatadah said: “I said to Anas: ‘What does that mean?’ He said: ‘To the lowest part of his stomach.’” – He said: “So my heart was removed, and washed with Zamzam water, then returned to its placed. Then I was filled with Faith and wisdom.”There is a long story with this Hadith.
“I was with the Prophet in a battle when of his finger bled, so the Prophet said: ‘Are you but a finger that bleeds – In the cause of Allah is what you have met.’” He said: “Jibril was delayed, so the idolaters said: ‘Muhammad has been forsaken.’ So Allah, Blessed is He and Most High revealed: Your Lord has neither forsaken you, nor hate you.”
“I heard a Bedouin man saying: ‘I heard Abu Hurairah saying: “Whoever recited Surat ‘By At-Tim and Az-Zamzam’ Then he recited: ‘Is not Allah the best of judges?’ then let him say: ‘Of course, and I am a witness to that.’”