read this :
Written by Carlos Santana, Nusrat Fateh Ali Khan and Michael Brook / Published by Stellabella Music (BMI), EMI Virgin Songs, Inc. o/b/o EMI Virgin Music Ltd. & Womad Music Ltd. (BMI),
Universal-PolyGram Int. Publ., Inc. (ASCAP), Michael Brian Brook publishing administered outside the U.S by Universal/Momentum Music Ltd. (PRS)
so u cant say tht he stole the nusrat fateh ali khan riff....