"dukh-ratri" ka samas vigraha

shouldn"t it be -  "dukh roopi ratri" ?????
 

Dukh ki raatri : Tatpurush samas

@shika dukh roopi raatri nahi ho sakta kyunki raatri dukh jaise nahi ho sakti (u dont usually say that 'night is like sad'). Par raat dukh se bhari ho sakti hai(but the night can be 'full of sadness'), isliye dukh ki raatri.

dukh ki raatri (sanbandh tatpurush samas)

dukh di ratri

sorry that was a typing mistake!! its dukh ki ratri............

Thanks guys :) tysm @mansi