Surah Al-Muddaththir 74:4

يَا أَيُّهَا الْمُدَّثِّرُ﴿١﴾ قُمْ فَأَنذِرْ ﴿٢﴾وَرَبَّكَ فَكَبِّر﴿٣﴾ْ وَثِيَابَكَ فَطَهِّرْ﴿٤﴾ وَالرُّجْزَ فَاهْجُرْ﴿٥﴾ وَلَا تَمْنُن تَسْتَكْثِرُ﴿٦﴾وَلِرَبِّكَ فَاصْبِرْ

74:1-7 These verses were the second revelation to the Holy Prophet (pbuh) after chapter 96. The use of the word Al-Muddaththar الْمُدَّثِّر for the Holy Prophet points to the fact that there is absolutely no use in always remaining wrapped up in the mantle (Muzzammalمُزَّمِّلُ) and praying, but there is also a time to stand up and attend to the strenuous duties and responsibilities of a Prophet. Qumقُمْ – Arise! Stand up! This was the second Divine Command given to the Holy Prophet (pbuh) after Iqraاقْرَأْ Read! That is why Muslim sermons are always in a standing position. The third Command was Unzurأَنذِرْ – Warn! The fourth command was to announce the supremacy of the Lord (- Kabbirكَبِّرْ). Allâh Akbar is pronounced daily in five Adzâns (اذان- call for Prayer) six times each, and before Aqâma (أقاما -standing up for prayer) and during the movements of the Prayer. This all is in accordance with this command وَثِيَابَكَ فَطَهِّرْ (and purify your clothes). Thiyâbثياب has also the meaning of “heart” and “spirit” (Lane). It also means put your works in order. Cleanliness and Purity (al-Tahhar) is an Attribute of God. It is of two kinds in human beings, the first is the physical purity and cleanliness of the body - in particular specific places of the body, there is no disagreement and dispute about it and the other is the cleanliness of the heart.