Shaykhul Islam Ibn Taimiyyah rahimahullah was asked:
What about people who are unable to make qurban, is it permissible to seek debt?
الحَمْدُ للهِ رَبِّ العَالميْنَ إِنْ كَانَ لَهُ وَفَاءٌ فَاسْتَدَانَ مَا يُضَحِّي بِهِ فَحَسَنٌ وَلاَ عا
Alhamdulillah rabbil 'alamin.
If this person has the ability to pay off, then he can seek debt to be able to sacrifice, that is good. But it is not obligatory for him to do so. Allah knows best. (Majmu'ah Al-Fatawa, 26: 305)
This means that it is still permissible to make qurban in a state of debt, for example, he believes that his debt can be paid in full from the salary that will come out at the end of the month. But remember, making qurban with debt according to Shaykhul Islam Ibn Taymiyyah is not necessary.
May be useful.