228. Siblings of Yusuf.

Verses (12:7, 8, 59, 76, 77) of the Quran mention only one person as Yusuf’s sibling, although there are others.

Prophet Yusuf picks and chooses a single person as his sibling among the rest. In the same way the rest of the other siblings also stay from Prophet Yusuf and the one whom he addressed as his brother. .

The reason to distinguish themselves from each other probably being half brothers. Suggesting Yusuf and his brother being from the same mother and the rest of the others from a different mother..