Why does the worshipper prostrate twice in each rak‘ah?
Question

                When I was a kid I was told that when God sent Iblis out of the Heavens and looking at the rage of Allah, the Angels bowed a second time thus the reason for us to Bow twice in our prayers. Is there any truth in it ? as I can't find any references. Could you please clarify ?.
Praise be to Allah.
      What you say is not correct and it is not permissible to 
      mention it or speak of it for a number of reasons: 

    Firstly:

    It is a claim for which there is no evidence. The books of 
    tafseer are readily available and none of their authors said such a thing. 

    Secondly:

    In His Book Allah, may He be exalted, only mentioned one 
    command to prostrate to Adam, then He said that the angels all prostrated 
    except Iblees, who was one of the jinn; he rebelled against the command of 
    his Lord and refused and was arrogant, and thus the test was completed. 

    Allah says (interpretation of the meaning):

    “And (remember) when We said to the angels: "Prostrate 
    yourselves before Adam.". Snd they prostrated except Iblîs (Satan), he 
    refused and was proud and was one of the disbelievers (disobedient to 
    Allâh)”

    [al-Baqarah 2:34]

    “And (remember) when We said to the angels;"Prostrate 
    yourselves unto Adam." So they prostrated themselves except Iblîs (Satan). 
    He was one of the jinn; he disobeyed the Command of his Lord”

    [al-Kahf 18:50].

    Thirdly: 

    The prostration of the angels was to Adam (peace be upon 
    him): “‘Prostrate before Adam’”. As for our prostration in prayer, it 
    is to Allah, may He be exalted. There is no connection between the 
    prostration of the worshipper in his prayer and the prostration of the 
    angels before Adam (peace be upon him). 

    Fourthly: 

    There is nothing in the Qur’aan or in the Sunnah to suggest 
    that when Iblees refused to prostrate to Adam, Allah got very angry in a way 
    that alarmed the angels. So it is not permissible to attribute such anger to 
    Him in this situation. It is not permissible to claim such a thing except 
    with sound evidence. 

    It should be noted that Allah, may He be exalted, has 
    forbidden us to speak of Him and His religion without knowledge. He says 
    (interpretation of the meaning):

    “He [Shaitân (Satan)] commands you only what is evil and 
    Fahshâ (sinful), and that you should say against Allâh what you know not”

    [al-Baqarah 2:169]

    “Say (O Muhammad ): "(But) the things that my Lord has 
    indeed forbidden are Al-Fawâhish (great evil sins, every kind of unlawful 
    sexual intercourse,) whether committed openly or secretly, sins (of all 
    kinds), unrighteous oppression, joining partners (in worship) with Allâh for 
    which He has given no authority, and saying things about Allâh of which you 
    have no knowledge”

    [al-A‘raaf 7:33]. 

    Al-Daarimi (174) narrated from Abu Moosa (may Allah be 
    pleased with him) that he said in his khutbah: Whoever has some knowledge 
    let him teach it to the people, but let him beware of saying that of which 
    he has no knowledge, lest he transgress the limits and go beyond the pale of 
    Islam. 

    And Allah knows best.