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Let $\lambda_i (n)$ $i= 1, 2, 3$ denote the normalised Fourier coefficientsof holomorphic eigenform or Maass cusp form. In this paper we shall considerthe sum: \[ S:= \frac{1}{H}\sum_{h\leq H} V\left( \frac{h}{H}\right)\sum_{n\leqN} \lambda_1 (n) \lambda_2 (n+h) \lambda_3 (n+ 2h)W\left( \frac{n}{N} \right),\] \noindent where $V$ and $W$ are smooth bump functions, supported on $[1,2]$. We shall prove a nontrivial upper bound, under the assumption that $H\geqN^{1/2+ \epsilon}$.

On double shifted convolution sum of $SL(2, \mathbb{Z})$ Hecke eigen forms