The word(s) "lower" appears 27 time(s) in 27 verse(s) in Quran in Mohsin Khan translation.

(21) And, indeed We have sent Messengers before you (O Muhammad صلى الله عليه وسلم): of some of them We have related to you their story. And of some We have not related to you their story, and it was not given to any Messenger that he should bring a sign except by the Leave of Allah. But, when comes the Commandment of Allah, the matter will be decided with truth, and the followers of falsehood will then be lost.

(22) You will see (on the Day of Resurrection), the Zalimun (polytheists and wrong-doers) fearful of that which they have earned, and it (Allah's Torment) will surely befall them. But those who believe (in the Oneness of Allah - Islamic Monotheism) and do righteous deeds (will be) in the flowering meadows of the Gardens (Paradise). They shall have whatsoever they desire with their Lord. That is the supreme Grace, (Paradise).

(23) And verily this (the Qur'an) is indeed a Reminder for you (O Muhammad صلى الله عليه و سلم) and your people (Quraish people, or your followers), and you will be questioned (about it).

(24) And to Allah belongs the kingdom of the heavens and the earth. And on the Day that the Hour will be established - on that Day the followers of falsehood (polytheists, disbelievers, worshippers of false deities) shall lose (everything).

(25) Verily, those who lower their voices in the presence of Allah's Messenger (صلى الله عليه وسلم), they are the ones whose hearts Allah has tested for piety. For them is forgiveness and a great reward.

(26) And those who believe in (the Oneness of) Allah and His Messengers - they are the Siddiqun (i.e. those followers of the Prophets who were first and foremost to believe in them), and the martyrs with their Lord, they shall have their reward and their light. But those who disbelieve (in the Oneness of Allah - Islamic Monotheism) and deny Our Ayat (proofs, evidence, verses, lessons, signs, revelations, etc.) - they shall be the dwellers of the blazing Fire.

(27) With their eyes lowered in fear and humility, ignominy covering them (all over)! That is the Day which they were promised!