The word(s) "mother" appears 50 time(s) in 36 verse(s) in Quran in Mohsin Khan translation.

(11) Allah blots out what He wills and confirms (what He wills). And with Him is the mother of the Book (Al-Lauh Al-Mahfuz)

(12) And Allah has brought you out from the wombs of your mothers while you know nothing. And He gave you hearing, sight, and hearts that you might give thanks (to Allah).

(13) "O sister (i.e. the like) of Harun (Aaron) ! Your father was not a man who used to commit adultery, nor your mother was an unchaste woman."

(14) "And dutiful to my mother, and made me not arrogant, unblest.

(15) "When We inspired your mother with that which We inspired.

(16) "When your sister went and said: 'Shall I show you one who will nurse him?' So We restored you to your mother, that she might cool her eyes and she should not grieve. Then you did kill a man, but We saved you from great distress and tried you with a heavy trial. Then you stayed a number of years with the people of Madyan (Midian). Then you came here according to the fixed term which I ordained (for you), O Musa (Moses)!

(17) He [Harun (Aaron)] said: "O son of my mother! Seize (me) not by my beard, nor by my head! Verily, I feared lest you should say: 'You have caused a division among the Children of Israel, and you have not respected my word!' "

(18) The Day you shall see it, every nursing mother will forget her nursling, and every pregnant one will drop her load, and you shall see mankind as in a drunken state, yet they will not be drunken, but severe will be the Torment of Allah.

(19) And We made the son of Maryam (Mary) and his mother as a sign, and We gave them refuge on high ground, a place of rest, security and flowing streams.

(20) There is no restriction on the blind, nor any restriction on the lame, nor any restriction on the sick, nor on yourselves, if you eat from your houses, or the houses of your fathers, or the houses of your mothers, or the houses of your brothers, or the houses of your sisters, or the houses of your father's brothers, or the houses of your father's sisters, or the houses of your mother's brothers, or the houses of your mother's sisters, or (from that) whereof you hold keys, or (from the house) of a friend. No sin on you whether you eat together or apart. But when you enter the houses, greet one another with a greeting from Allah (i.e. say: السلام عليكم) As-Salamu 'Alaikum - peace be on you) blessed and good. Thus Allah makes clear the Ayat (these Verses or your religious symbols and signs) to you that you may understand.