Tafsir of Yusuf 12:86

قال إنما أشكو بثي وحزني إلى الله

He said: "I only complain of my grief and sorrow to Allah.'' When they said these words to him, Yaqub said,

إنما أشكو بثي وحزني

`(I only complain of my grief and sorrow) for the afflictions that struck me,

إلى الله

(to Allah) alone,

وأعلم من الله ما ﻻ تعلمون

and I know from Allah that which you know not. I anticipate from Allah each and every type of goodness.' Ibn Abbas commented on the meaning of,

وأعلم من الله ما ﻻ تعلمون

(and I know from Allah that which you know not), "The vision that Yusuf saw is truthful and Allah will certainly make it come true.''