The word(s) "brother" appears 84 time(s) in 68 verse(s) in Quran in Mohsin Khan translation.

(11) And to 'Ad (people, We sent) their brother Hud. He said: "O my people! Worship Allah! You have no other Ilah (God) but Him. (La ilaha illallah: none has the right to be worshipped but Allah). Will you not fear (Allah)?"

(12) And to Thamud (people, We sent) their brother Salih. He said: "O my people! Worship Allah! You have no other Ilah (God) but Him. (La ilaha illallah: none has the right to be worshipped but Allah). Indeed there has come to you a clear sign (the miracle of the coming out of a huge she-camel from the midst of a rock) from your Lord. This she-camel of Allah is a sign unto you; so you leave her to graze in Allah's earth, and touch her not with harm, lest a painful torment should seize you.

(13) And to (the people of) Madyan (Midian), (We sent) their brother Shu'aib. He said: "O my people! Worship Allah! You have no other Ilah (God) but Him. [La ilaha illallah (none has the right to be worshipped but Allah)]." Verily, a clear proof (sign) from your Lord has come unto you; so give full measure and full weight and wrong not men in their things, and do not do mischief on the earth after it has been set in order, that will be better for you, if you are believers.

(14) They said: "Put him and his brother off (for a time), and send callers to the cities to collect -

(15) And We appointed for Musa (Moses) thirty nights and added (to the period) ten (more), and he completed the term, appointed by his Lord, of forty nights. And Musa (Moses) said to his brother Harun (Aaron): "Replace me among my people, act in the Right Way (by ordering the people to obey Allah and to worship Him Alone) and follow not the way of the Mufsidun (mischief-makers)."

(16) And when Musa (Moses) returned to his people, angry and grieved, he said: "What an evil thing is that which you have done (i.e. worshipping the calf) during my absence. Did you hasten and go ahead as regards the matter of your Lord (you left His worship)?" And he threw down the Tablets and seized his brother by (the hair of) his head and dragged him towards him. Harun (Aaron) said: "O son of my mother! Indeed the people judged me weak and were about to kill me, so make not the enemies rejoice over me, nor put me amongst the people who are Zalimun (wrong-doers)."

(17) Musa (Moses) said: "O my Lord! Forgive me and my brother, and admit us into Your Mercy, for you are the Most Merciful of those who show mercy."

(18) But (as for) their brothers (the devils) they (i.e. the devils) plunge them deeper into error, and they never stop short.

(19) O you who believe! Take not as Auliya' (supporters and helpers) your fathers and your brothers if they prefer disbelief to Belief. And whoever of you does so, then he is one of the Zalimun (wrong-doers).

(20) Say: If your fathers, your sons, your brothers, your wives, your kindred, the wealth that you have gained, the commerce in which you fear a decline, and the dwellings in which you delight are dearer to you than Allah and His Messenger, and striving hard and fighting in His Cause, then wait until Allah brings about His Decision (torment). And Allah guides not the people who are Al-Fasiqun (the rebellious, disobedient to Allah).