As said in Hasani's bio, once he reached to his cub-teen hood, his adoptive mother Sarabi had died from old age. After loosing his mother Haley and now loosing Sarabi, had really brought Hasani down. Sarabi was good to him and took care of him, since no one was there to raise him after his mother's death. So now, he nuzzles Sarabi's lifeless body and then walks away with sadness.
Hasani: -You wont be forgotten Sarabi...-
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Base: Sakyas-Bases(C) DA.
Hasani and Haley: Me(C)
Sarabi: Disney(C)