The word(s) "brother" appears 64 time(s) in 55 verse(s) in Quran in Muhammad Pickthal translation.

(41) When their brother Noah said unto them: Will ye not ward off (evil)?

(42) When their brother Hud said unto them: Will ye not ward off (evil)?

(43) When their brother Salih said unto them: Will ye not ward off (evil)?

(44) When their brother Lot said unto them: Will ye not ward off (evil)?

(45) And We verily sent unto Thamud their brother Salih, saying: Worship Allah. And lo! they (then became two parties quarrelling.

(46) My brother Aaron is more eloquent than me in speech. Therefor send him with me as a helper to confirm me. Lo! I fear that they will give the lie to me.

(47) He said: We will strengthen thine arm with thy brother, and We will give unto you both power so that they cannot reach you for Our portents. Ye twain, and those who follow you, will be the winners.

(48) And unto Midian We sent Shu'eyb, their brother. He said: O my people! Serve Allah, and look forward to the Last Day, and do not evil, making mischief, in the earth.

(49) It is no sin for them (thy wives) to converse freely) with their fathers, or their sons, or their brothers, or their brothers' sons, or the sons of their sisters or of their own women, or their slaves. O women! Keep your duty to Allah. Lo! Allah is ever Witness over all things.

(50) Lo! this my brother hath ninety and nine ewes while I had one ewe; and he said: Entrust it to me, and he conquered me in speech.