There gathered near the House (i.e. the Ka`ba) two Quraishi persons and a person from Thaqif (or two
persons from Thaqif and one from Quraish), and all of them with very fat bellies but very little
intelligence. One of them said, "Do you think that Allah hears what we say?" Another said, "He hears
us when we talk in a loud voice, but He doesn't hear us when we talk in a low tone." The third said, "If
He can hear when we talk in a loud tone, then He can also hear when we speak in a low tone." Then
Allah, the Honorable, the Majestic revealed:
'And you have not been screening against yourself lest your ears, and eyes and your skins should
testify against you....' (41.22-23)
This hadith has been narrated through another chain as well.
Sahih al-Bukhari Book 65, Hadith 339
“Allah is most great, Allah is most great”, and one of you says in response: “Allah is most great”, Allah is most great; then says: “ I testify tht there is no god but Allah”, and he says in response: “I testify that there is no god but Allah”, then say:” I testify that Muhammad is the Messenger of Allah”, and he makes the response: “ I testify that Muhammad is the Messenger of Allah”, then says: “Come to prayer”, and he makes the response: “There is no might and no power except in Allah”: then says: “ Allah is most great, Allah is most great”, and he makes the response: “Allah is most great”, then says: “There is no god but Allah”, if he says this from his heart, he enter Paradise.
Sunan Abi Dawud Book 2, Hadith 137
`Umar set out along with the Prophet (p.b.u.h) with a group of people to Ibn Saiyad till they saw him
playing with the boys near the hillocks of Bani Mughala. Ibn Saiyad at that time was nearing his
puberty and did not notice (us) until the Prophet (ﷺ) stroked him with his hand and said to him, "Do you
testify that I am Allah's Messenger (ﷺ)?" Ibn Saiyad looked at him and said, "I testify that you are the
Messenger of illiterates." Then Ibn Saiyad asked the Prophet (p.b.u.h), "Do you testify that I am
Allah's Messenger (ﷺ)?" The Prophet (p.b.u.h) refuted it and said, "I believe in Allah and His Apostles."
Then he said (to Ibn Saiyad), "What do you think?" Ibn Saiyad answered, "True people and liars visit
me." The Prophet (ﷺ) said, "You have been confused as to this matter." Then the Prophet (ﷺ) said to him, "I
have kept something (in my mind) for you, (can you tell me that?)" Ibn Saiyad said, "It is Al-Dukh
(the smoke)." (2) The Prophet (ﷺ) said, "Let you be in ignominy. You cannot cross your limits." On that
`Umar, said, "O Allah's Messenger (ﷺ)! Allow me to chop his head off." The Prophet (p.b.u.h) said, "If he is
he (i.e. Dajjal), then you cannot overpower him, and if he is not, then there is no use of murdering
him." (Ibn `Umar added): Later on Allah's Messenger (ﷺ) (p.b.u.h) once again went along with Ubai bin
Ka`b to the date-palm trees (garden) where Ibn Saiyad was staying. The Prophet (p.b.u.h) wanted to
hear something from Ibn Saiyad before Ibn Saiyad could see him, and the Prophet (p.b.u.h) saw him
lying covered with a sheet and from where his murmurs were heard. Ibn Saiyad's mother saw Allah's
Apostle while he was hiding himself behind the trunks of the date-palm trees. She addressed Ibn
Saiyad, "O Saf ! (and this was the name of Ibn Saiyad) Here is Muhammad." And with that Ibn Saiyad
got up. The Prophet (ﷺ) said, "Had this woman left him (Had she not disturbed him), then Ibn Saiyad
would have revealed the reality of his case.
Sahih al-Bukhari Book 23, Hadith 108