Shrivastava breathed his last on Saturday after battling cancer for five years.
Sonu took to Twitter and shared his Whatsapp conversation dated July 25. A snapshot of the conversation features an image of Shrivastava on a hospital bed.
— Sonu Nigam (@sonunigam) September 8, 2015
With a smile on his face, although lying on the hospital bed, Shrivastava had shared his photograph with Nigam and captioned it as "Mere chota bhai... khush raho (my younger brother... be happy)."
Responding to the shared image, the 42-year-old wrote: "Lots of Love Aadesh bhai.. Prayers and best wishes... you will get well soon...Jaimataki..."